US Pat. No. 9,314,673

GOLF BALL COMPOSITION AND GOLF BALL

BRIDGESTONE SPORTS CO., L...

1. A golf ball composition comprising a diene polymer, an unsaturated carboxylic acid and/or a metal salt thereof, and an
organic peroxide, wherein the diene polymer has an aluminum catalyst residue content of not more than 300 ppm; wherein the
diene polymer has a cis-1,4 bond content of at least 90% and a 1,2-vinyl bond content of not more than 2.0%, and a molecular
weight distribution (Mw/Mn) of not more than 3; wherein the diene polymer is synthesized using as a catalyst at least one
type of complex selected from the group consisting of metallocene complexes of general formulae (I) and (II) below, and half-metallocene
cation complexes of general formula (III) below; wherein the center metal M in general formulas (I), (II), and (III) is a
lanthanide element:

wherein in formula (I), M is a lanthanide element; each occurrence of CpR is a substituted or unsubstituted indenyl; Ra to Rf are each independently an alkyl group of 1 to 3 carbons or a hydrogen atom; L is a neutral Lewis base; and w is an integer
from 0 to 3;


wherein in formula (II), M is a lanthanide element; each occurrence of CpR is a substituted or unsubstituted indenyl; X? is a hydrogen atom, a halogen atom, an alkoxide group, a thiolate group, an
amide group, a silyl group or a hydrocarbon group of 1 to 20 carbons; L is a neutral Lewis base; and w is an integer from
0 to 3;


wherein in formula (III), M is a lanthanide element; CpR? is a substituted or unsubstituted cyclopentadienyl, indenyl or fluorenyl; X is a hydrogen atom, a halogen atom, an alkoxide
group, a thiolate group, an amide group, a silyl group or a hydrocarbon group of 1 to 20 carbons; L is a neutral Lewis base;
w is an integer from 0 to 3; and [B]? is a non-coordinating anion,

further comprising aluminoxanes as co-catalysts, wherein an elemental ratio Al/M of the aluminum element Al in the aluminoxane
to the center metal M in the metallocene complex is from 10 to 1,000.

US Pat. No. 9,403,969

COMPOUNDING SILICA-REINFORCED RUBBER WITH LOW VOLATILE ORGANIC COMPOUND (VOC) EMISSION

Bridgestone Corporation, ...

1. A rubber compound comprising:
an alkoxy-modified silsesquioxane comprising one or more compounds selected from the group consisting of alkoxy-modified silsesquioxanes
having the formula

and mixtures thereof, wherein w, x and y represent mole fractions, y does not equal zero, either w or x but not both can be
zero, and w+x+y=1.00, wherein R1, R2, and R3 are selected from the group consisting of (i) H or an alkyl groups having one to about 20 carbon atoms, (ii) cycloalkyl groups
having 3 to about 20 carbon atoms, (iii) alkylaryl groups having 7 to about 20 carbon atoms, and (iv) R5X, wherein X is selected from the group consisting of Cl, Br, SH, SaR6, NR62, OR6, CO2H, CO2R6, SCOR6, OH, olefins, epoxides, amino groups, vinyl groups, acrylates and methacrylates, wherein a is 1 to about 8, R5 is selected from the group consisting of alkylene groups having one to about 20 carbon atoms, cycloalkylene groups having
3 to about 20 carbon atoms, and R4 and R6 are selected from the group consisting of alkyl groups having one to about 5 carbon atoms, cycloalkyl groups having 3 to about
20 carbon atoms, and alkylaryl groups having 7 to about 20 carbon atoms;
a reinforcing filler comprising silica or a mixture thereof with carbon black;
an elastomer selected from the group consisting of: styrene/butadiene copolymer, polyisoprene, polybutadiene, butadiene/isoprene
copolymer, butadiene/isoprene/styrene terpolymers, isoprene/styrene copolymer, natural rubber, butyl rubber, halobutyl rubber,
ethylene-propylene-diene rubber and combinations thereof; and

a catalyst for an alkoxysilane-silica reaction selected from the group consisting of: a strong inorganic base, an alkyl tin
catalyst, a zirconium catalyst, a titanium catalyst, and combinations thereof;

wherein the alkoxy-modified silsesquioxane has an 29Si NMR spectra corresponding to the following limitations:

0 to about 3.8 percent of the 29Si signal in the spectral range of ?47 to ?52 ppm;

about 8.5 to about 31.6 percent of the 29Si signal in the spectral range of ?52 to ?57 ppm;

about 13.4 to about 39.6 percent of the 29Si signal in the spectral range of ?57 to ?62 ppm;

about 21.2 to about 49.6 percent of the 29Si signal in the spectral range of ?62 to ?67 ppm;

about 5.3 to about 36.2 percent of the 29Si signal in the spectral range of ?67 to ?72 ppm.

US Pat. No. 9,464,183

RUBBER COMPOSITION AND PNEUMATIC TIRE USING THE SAME

BRIDGESTONE CORPORATION, ...

1. A method for producing a pneumatic tire comprising a carcass comprised of at least one carcass ply and a belt disposed
on the carcass outward in a radial direction of the tire and comprised of at least one belt layer; wherein at least one of
the carcass and the belt includes a layer composed of steel cords covered with a coating rubber, the method comprising the
step of using a rubber composition as the coating rubber covering the steel cords in at least one of the carcass and the belt,
wherein the rubber composition is produced by a method comprising the steps of:
reacting a dicarboxylic acid halide represented by the following general formula (4):
wherein R is a divalent aliphatic group having a carbon number of 1-16 or a divalent aromatic group, and X is a halogen atom,with resorcin to form a reaction mixture;
isolating a compound represented by the following general formula (2):
wherein R represents a divalent aliphatic group having a carbon number of 1-16 or a divalent aromatic group,from the reaction mixture; and
compounding 1-10 parts by mass of sulfur and 0.1-10 parts by mass of the isolated compound represented by the general formula
(2) into 100 parts by mass of a rubber component.

US Pat. No. 9,434,387

METHOD AND APPARATUS FOR DETERMINING ROAD SURFACE CONDITION

BRIDGESTONE CORPORATION, ...

1. A method for determining a condition of a road surface with which a tire is in contact by detecting tire vibration during
vehicular travel, the method comprising:
detecting the tire vibration during vehicular travel;
deriving a time-series waveform of the detected tire vibration;
windowing the time-series waveform of the tire vibration at a predetermined time width and extracting time-series waveforms
for respective time windows;

calculating respective feature vectors from the time-series waveforms of the respective time windows;
calculating kernel functions from the feature vectors for the respective time windows and road surface feature vectors, which
are the feature vectors for the respective time windows calculated from the time-series waveforms of tire vibration obtained
for each of road surface conditions calculated in advance; and

determining the road surface condition based on values of discriminant functions using the kernel functions,
wherein in the determining, the road surface condition is determined by comparing the values of the discriminant functions
obtained for the respective road surface conditions.

US Pat. No. 9,376,004

ANTI-VIBRATION DEVICE FOR VEHICLE

NISSAN MOTOR CO., LTD., ...

1. An anti-vibration device for a vehicle, comprising:
a rod fixed to an engine at one end portion thereof and fixed to a vehicle body at the other end portion thereof;
an actuator comprising an inertia mass supported on the rod and operative to reciprocate the inertia mass in an axial direction
of the rod; and

a vibration detection section configured to detect vibration of the rod in the axial direction of the rod,
wherein the vibration detection section is disposed between the one end portion of the rod and the other end portion of the
rod, and is disposed on a side of the rod opposite to a side of the rod facing the engine in a leftward-rightward direction
of the vehicle.

US Pat. No. 9,068,053

FLUORO-RUBBER COMPOSITION AND BLADDER FOR TIRE FABRICATION

BRIDGESTONE CORPORATION, ...

1. A fluoro rubber composition comprising a rubber component comprising:
a fluoro rubber;
carbon black; and
a vulcanization system compounding agent containing a co-crosslinking agent,
wherein the fluoro rubber is at least one member selected among (A) a copolymer of tetrafluoroethylene/perfluoroalkyl vinyl
ether, (B) a copolymer of tetrafluoroethylene/propylene, and (C) a copolymer made of (i) at least one monomer selected among
tetrafluoroethylene, hexafluoropropylene, pentafluoropropylene, trifluoroethylene, chlorotrifluoroethylene, vinyl fluoride,
perfluoroalkyl vinyl ether and propylene, and (ii) vinylidene fluoride;

in a kneading step of compounding the carbon black in the rubber component, an average shear rate of a rotor tip point of
a kneading machine is 100 (1/sec) or more, and a kneading maximum temperature Tm is 120° C. or higher and not higher than 200° C.; and

in a dynamic viscoelasticity test of an unvulcanized rubber by a rubber process analyzer (RPA) (measurement temperature: 100°
C., measurement frequency: 1 Hz), a difference ?GA? (G?(1%)?G?(100%)) between a shear modulus G?(1%) at the time of a dynamic strain of 1% and a shear modulus G?(100%) at the
time of a dynamic strain of 100% is 120 kPa or more and not more than 3,000 kPa,

wherein the elongation at break at 25° C. of the fluoro rubber composition after vulcanization is 400% or more and not more
than 800%, and

wherein a compounding amount of the co-crosslinking agent is 0.5 to 2.5 parts by mass based on 100 parts by mass of the rubber
component.

US Pat. No. 9,416,205

ORGANOMETALLIC COMPLEX CATALYST AND POLYMERIZATION METHOD EMPLOYING SAME

Bridgestone Corporation, ...

1. A process for providing a polymer, said process comprising contacting ethylenically unsaturated compounds that comprise
at least one conjugated diene and at least one ?-olefin with a catalyst composition that comprises a complex of the general
formula
where
M represents a Group 3 metal atom;
L represents a neutral Lewis base;
z is an integer of from 0 to 3 inclusive;
y is 1 or 2;
R1, R2 and R3 independently are H; a halogen atom; a silyl group; a siloxy group; nitro group; sulfonate group; alkoxy group; a C1-C20 alkyl group; aralkyl group; or an aryl group, optionally including one or more C1-C8 alkyl, perfluoroalkyl, alkoxy, nitro, sulfonate or halo substituents, with the proviso that R1 and R2 or R2 and R3 can join so as to provide a substituted or unsubstituted hydrocarbylene group which forms an aromatic or non-aromatic carbocyclic
ring fused with the pyrrole moiety;

R4 is H, a C1-C10 alkyl group, or a substituted or unsubstituted aryl group, with the proviso that R4 can join with R3 so as to provide a substituted or unsubstituted hydro-carbylene group which forms a non-aromatic carbocyclic ring;

R5 is a C1-C12 alkyl group, a C5-C8 cycloalkyl group, or an aryl group, optionally substituted at, relative to the point of connection to the N atom,

the para position with a nitro group, a trifluoromethyl group, a halogen atom, an alkoxy group, a C1-C4 alkyl group, or an aryl group, or

one or both ortho positions with a C1-C4 alkyl group or an aryl group; and

R6 is a monoanionic ligand,
thereby providing said polymer, said process optionally further comprising reacting said polymer with a functionalizing agent
so as to provide terminal functionality to said polymer.
US Pat. No. 9,132,697

MODIFIED NATURAL RUBBER OR MODIFIED NATURAL RUBBER LATEX, AND RUBBER COMPOSITION AND PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A rubber composition comprising a modified natural rubber, which is obtained by graft-polymerizing natural rubber latex
with a polar group-containing monomer and then coagulating and drying, and carbon black and/or silica, wherein a grafting
ratio of the polar group-containing monomer is 0.01-5.0% by mass per the natural rubber latex, and a content of the modified
natural rubber component of the rubber composition is at least 15% by mass.

US Pat. No. 9,403,848

ORGANOMETALLIC CATALYST COMPLEX AND POLYMERIZATION METHOD EMPLOYING SAME

Bridgestone Corporation, ...

1. A process for providing a polymer, said process comprising contacting one or more ethylenically unsaturated hydrocarbon
compounds with a catalyst composition that comprises a complex having the general formula
where
M represents a Group 3 metal atom;
L represents a neutral Lewis base;
z is an integer of from 0 to 2 inclusive;
R1 is H or a monovalent organic group;

each R2 is H, a halogen atom, or a monovalent organic group;

each R3 independently is H, a halogen atom, a hydrocarbyl group, a hydrocarbyloxy group, a hydrocarbylthio group, a dihydrocarbylamino
group, a disilylamino group, or a dihydrocarbylphosphino group;

Q is a —N(CH3)2 group; and

R4 is a divalent organic group,
with the proviso that either or both of the following can be true: (1) two R2 groups can join so as to provide a substituted or unsubstituted hydrocarbylene group and (2) Rl can join with an R2 so as to provide a substituted or unsubstituted hydrocarbylene group, wherein said one or more ethylenically unsaturated hydrocarbon
compounds comprise at least one polyene, said polymer constituting the polymerization product of said compounds.

US Pat. No. 9,393,719

PNEUMATIC TIRE WITH SPECIFIED OUTER SURFACE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire comprising:
a tread portion and side portions, wherein:
at least one of the tread portion and the side portions has an outer surface with: (i) an arithmetical mean roughness Ra in
the range of 0.1 ?m to 0.6 ?m when a reference length Lr is 20 ?m, and (ii) an arithmetical mean roughness Ra? outside the
range of 0.1 ?m to 0.6 ?m when the reference length Lr is 800 ?m, and

the outer surface has an irregularity diameter in the range of 40-230 ?m and an irregularity depth in the range of 3-22 ?m.

US Pat. No. 9,073,391

TIRE

BRIDGESTONE CORPORATION, ...

1. A tire having, on a tread portion, a plurality of circumferential grooves extending in a tire circumferential direction,
and plural lateral grooves each communicating adjacent two circumferential grooves, thereby defining a plurality of block
land portion arrays formed by a large number of block land portions, wherein:
between block land portion arrays located adjacent to each other while sandwiching the circumferential groove, the block land
portions constituting said block land portion arrays are arranged so as to be positionally displaced from each other in the
tire circumferential direction;

a groove portion between the block land portions adjacent in the tire width direction extends obliquely with respect to the
tire width direction and the tire circumferential direction;

a distance between the block land portions adjacent in the tire width direction is shorter than a distance between the block
land portions adjacent in the tire circumferential direction;

in the adjacent block land portion arrays, the block land portion is adjacent to at least two block land portions by way of
a groove portion between block land portions adjacent in the tire width direction;

two side walls of the adjacent block land portion have projected lengths different from each other, the projected lengths
being obtained by projecting the side walls to a line parallel to the tire circumferential direction; and,

the block land portions adjacent in the tire width direction are disposed in a point-symmetric manner by way of the groove
portion between the block land portions adjacent in the tire width direction,

wherein a length of the block land portion in a widthwise cross section of the tire continuously increases from both end portions
of the block land portion in the tire circumferential direction toward a central portion of the block land portion.

US Pat. No. 9,139,680

COPOLYMER, RUBBER COMPOSITION, CROSSLINKED RUBBER COMPOSITION, AND TIRE

BRIDGESTONE CORPORATION, ...

1. A copolymer of a conjugated diene compound and a non-conjugated olefin, wherein the copolymer is a block copolymer having
a peak area in a range of 70° C. to 110° C. that accounts for at least 60% of a peak area in a range of 40° C. to 140° C.
and a peak area in a range of 110° C. to 140° C. that accounts for 20% or less of a peak area in a range of 40° C. to 140°
C., the peak areas being measured by the differential scanning calorimetry (DSC) according to JIS K 7121-1987.

US Pat. No. 9,242,144

GOLF BALL COMPOSITION AND GOLF BALL

BRIDGESTONE SPORTS CO., L...

1. A method for preparing a golf ball composition comprising the step of producing a diene polymer having a molecular weight
distribution (Mw/Mn) of at least 1.53 and not more than 1.74, and a weight-average molecular weight (Mw) of at least 33.3×104 and not more than 57.0×104; which is synthesized using as a catalyst at least one type of complex selected from the group consisting of metallocene
complexes of general formulae (I) and (II) below, and half-metallocene cation complexes of general formula (III) below, and
using an organolaluminum compound of the general formula AIRR?R? wherein R and R? are each independently a C1-10 hydrocarbon group, a chlorine or a hydrogen atom, and R? is a C1-10 hydrocarbon group in an amount of from 66.6 to 500 moles per mole of the metallocene complex as a co-catalyst; wherein the
center metal M in general formulae (I), (II) and (III) is gadolinium;

wherein in formula (I), each occurrence of CpR is a substituted or unsubstituted indenyl; Ra to Rf are each independently an alkyl group of 1 to 3 carbons or a hydrogen atom; L is a neutral Lewis base; and w is an integer
from 0 to 3;


wherein in formula (II), each occurrence of CpR is a substituted or unsubstituted indenyl; X? is a hydrogen atom, a halogen atom, an alkoxide group, a thiolate group, an
amide group, a silyl group or a hydrocarbon group of 1 to 20 carbons; L is a neutral Lewis base; and w is an integer from
0 to 3;


wherein in formula (III), CpR? is a substituted or unsubstituted cyclopentadienyl, indenyl or fluorenyl; X is a hydrogen atom, a halogen atom, an alkoxide
group, a thiolate group, an amide group, a silyl group or a hydrocarbon group of 1 to 20 carbons; L is a neutral Lewis base;
w is an integer from 0 to 3; and [B]? is a non-coordinating anion, and then

compounding the diene polymer with an unsaturated carboxylic acid and/or a metal salt thereof, and an organic peroxide to
make up the golf ball composition.

US Pat. No. 9,242,146

GOLF BALL COMPOSITION AND GOLF BALL

BRIDGESTONE SPORTS CO., L...

1. A method for preparing a golf ball composition comprising:
a step of producing a diene polymer (A) having a smallest molecular weight value of at least 3,000; which is synthesized using
as a catalyst at least one type of complex selected from the group consisting of metallocene complexes of general formulae
(I) and (II) below, and half-metallocene cation complexes of general formula (III) below, and using an organolaluminum compound
of the general formula AIRR?R? wherein R and R? are each independently a C1-10 hydrocarbon group, a chlorine or a hydrogen atom, and R? is a C1-10 hydrocarbon group in an amount of from 97.4 to 500 moles per mole of the metallocene complex as a co-catalyst; wherein the
center metal M in general formulae (I), (II) and (III) is gadolinium:


wherein in formula (I), each occurrence of CpR is a substituted or unsubstituted indenyl;

Ra to Rf are each independently an alkyl group having 1 to 3 carbons or a hydrogen atom; L is a neutral Lewis base; and w is an integer
from 0 to 3;


wherein in formula (II), each occurrence of CpR is a substituted or unsubstituted indenyl;

X? is a hydrogen atom, a halogen atom, an alkoxide group, a thiolate group, an amide group, a silyl group or a hydrocarbon
group having 1 to 20 carbons; L is a neutral Lewis base; and w is an integer from 0 to 3;


wherein in formula (III), CpR' is a substituted or unsubstituted cyclopentadienyl, indenyl or fluorenyl; X? is a hydrogen atom, a halogen atom, an alkoxide
group, a thiolate group, an amide group, a silyl group or a hydrocarbon group having 1 to 20 carbons; L is a neutral Lewis
base; w is an integer from 0 to 3; and is a non-coordinating anion; and then

a step of compounding the diene polymer (A) with an unsaturated carboxylic acid and/or a metal salt thereof (B), and an organic
peroxide (D) to make up the golf ball composition.

US Pat. No. 9,391,346

NON-AQUEOUS ELECTROLYTE ADDITIVE, NON-AQUEOUS ELECTROLYTE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

BRIDGESTONE CORPORATION, ...

1. A non-aqueous electrolyte comprising a non-aqueous electrolyte additive and a supporting salt, wherein the non-aqueous
electrolyte additive comprises a phosphazene compound represented by the following general formula (1):
(NPR2)n  (1)

wherein each R independently represents fluorine or a hexafluoroisopropoxy group, one of the Rs represents the hexafluoroisopropoxy
group, and n is from 3 to 14,

wherein a content of the phosphazene compound represented by the general formula (1) is in a range from at least 1% by volume
to less than 15% by volume.

US Pat. No. 9,334,000

RUBBER TRACK

BRIDGESTONE CORPORATION, ...

1. A rubber track comprising:
a track main body formed of a rubber material in an endless belt shape,
in which a plurality of lug sections protrude from an outer circumferential surface of the track main body in a track circumferential
direction at an interval,

engaging sections engaged with a vehicle wheel of a track-type vehicle are disposed at a portion of the track main body disposed
between the lug sections neighboring in the track circumferential direction, and

a through-groove section passing through the lug section in the track circumferential direction is formed in the lug section,
wherein total areas of ground surfaces formed by top surfaces of the plurality of lug sections are different from each other
at both sides in a track widthwise direction with respect to an imaginary line which passes through the through-groove section
and extends in the track circumferential direction throughout the entire circumference and pass over the plurality of engaging
sections.

US Pat. No. 9,266,397

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire comprising , at least in part of a tread portion surface located between both tread ends:
a plurality of main grooves extending in a tire circumferential direction; and
a plurality of lateral grooves extending in a tire width direction, the lateral grooves each having one bent point so as to
be in a convex shape in the tire circumferential direction between the main grooves and/or between one of the main grooves
and a tread end,

the plurality of main grooves and the plurality of lateral grooves partition-forming a plurality of blocks each having a circumferential
protrusion in a shape conforming to the convex shape of the lateral groove,

the lateral grooves including a first lateral groove portion and a second lateral groove portion, the first lateral groove
portion extending from the apex of the circumferential protrusion to one of the main grooves or the tread end, the second
lateral groove portion extending from the apex of the circumferential protrusion to another main groove or the tread end,

the blocks each having at least one pair of lateral sipes extending in the tire width direction in a shape conforming to the
lateral grooves,

the pair of lateral sipes includes a first sipe and a second sipe, the first sipe having one end thereof opened to one of
the main grooves or to the tread end in the tire width direction and the other end thereof terminated within the block or
opened to a lateral groove, the second sipe having one end thereof opened to another main groove located on an opposite side
of the block from the main groove in the width direction or the tread end and the other end thereof terminated within the
block or opened to a lateral groove,

wherein the total length of the pair of lateral sipes is equal in tire-width-direction dimension to the block having the lateral
sipe disposed therein when both are projected onto the same plane which includes the tire rotation axis and is perpendicular
to the block surface,

wherein the first sipe extends along the first lateral groove and the second sipe extends along the second lateral groove,
the first sipe and the second sipe being non-parallel with each other,

wherein the first sipe has a tire-width-dimensional component overlapping with a tire-width-dimensional component of the second
sipe in an area where the apex is located in the tire width direction, in a projection view obtained by projecting the first
sipe and the second sipe onto the same plane which includes the tire rotation axis and is perpendicular to the block surface,

wherein the block has at least three lateral sipes formed therein, and at least one of the lateral sipes located between lateral
sipes located on both ends of the block in the tire circumferential direction is formed as a bottom-enlarged sipe having an
enlarged portion at the bottom thereof, and

wherein the lateral sipes located on both ends of the block in the circumferential direction are not bottom-enlarged sipes.

US Pat. No. 9,090,127

METAL SOAPS INCORPORATED IN RUBBER COMPOSITIONS AND METHOD FOR INCORPORATING SUCH SOAPS IN RUBBER COMPOSITIONS

Bridgestone Corporation, ...

1. A composition for a tire component comprising:
a sulfur vulcanized diene rubber,
a metal soap of the formula

wherein M is a metal with an oxidation state of +3 or +4, R is an alkyl group, and n is the valence of M;
wherein the carboxyl group, O2CR, is a C2 to C8 carboxyl group;

wherein the metal soap is present in the composition in an amount ranging from 5 phr to 100 phr;
wherein the composition is a tire component composition;
wherein the composition is free of paraffinic oil.

US Pat. No. 9,290,062

TYRE AND TYRE BUILDING METHOD

BRIDGESTONE CORPORATION, ...

1. A tyre comprising:
two beads;
a toroidal body ply wound about the two beads to form two turn-ups; and
two bead fillers, each of which contacts a bead, is at least partly enclosed inside a turn-up of the body ply and comprises
a first elastomer ring, which is placed between the body ply and the bead, is turned up about the bead to bring into close
proximity two opposite ends of the first elastomer ring that are connected to each other by the curing;

wherein a higher end of the first elastomer ring projects from the turn-up of the body ply such that an outer surface of the
higher end of the first elastomer ring is not in direct contact with a body ply;

wherein the first elastomer ring is made from a softer elastomer mix than the elastomer covering of the body ply or is made
from the same elastomer mix as the elastomer covering of the body ply;

wherein each bead filler also comprises a second elastomer ring, which is placed on top of the first elastomer ring between
the two opposite ends of the first elastomer ring; and

wherein each second elastomer ring is made from a softer elastomer mix than the first elastomer ring.
US Pat. No. 9,200,141

RUBBER COMPOSITION, METHOD FOR PREVENTING DISCOLORATION OF RUBBER COMPOSITION, AND TIRE

BRIDGESTONE CORPORATION, ...

1. A tire, wherein an outer skin of the tire is formed of a rubber composition comprising at least one rubber component selected
from a dienic synthetic rubber and a natural rubber and, as incorporated therein, at least one nonionic surfactant selected
from the compounds represented by the following formula (I):
R2O(R1O)nH   (I),

wherein in the formula (I), R2 represents an alkyl group or an alkenyl group having from 8 to 12 carbon atoms, and the alkyl group and the alkenyl group
may be any of linear chain, branched chain or cyclic ones; R1 represents an alkylene group having 4 2 or 3 carbon atoms; n indicates a mean addition molar number, and is from 18 to 30;

wherein the rubber composition further comprises wax and an amine-based antiaging agent.

US Pat. No. 9,090,131

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire comprising, in a tread surface, a compound groove partitioned into a first groove portion and a second
groove portion by a first groove side and a second groove side, the first groove side having an oblique side portion diagonally
disposed relative to a tire circumferential line in plan view, the second groove side intersecting with the oblique side portion
of the first groove side at an acute angle in plan view,
wherein the first groove portion and the second groove portion both have a groove depth that gradually reduces in an extending
direction of the groove toward an intersection between the oblique side portion and the second groove side, and a groove wall
extending from the first groove side is formed as a tapered surface mildly-sloped toward a groove bottom on the intersection
side when viewed in a groove transverse direction.

US Pat. No. 9,174,499

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire in which turbulent-flow generating projections each extending from an inner circumference side to an outer
circumference side, and provided on an outer tire surface at intervals in a tire circumferential direction, wherein:
each of the turbulent-flow generating projections includes an edge portion when being viewed in a cross-sectional shape taken
along a direction perpendicular to an extending direction thereof; and

a front wall angle formed between a front wall face of each turbulent-flow generating projection and the tire surface is set
in the range of 70° to 110°, the front wall face being hit by an airflow,

wherein the turbulent-flow generating projections are provided in a tire side portion,
wherein relationships of 8.0?p/h?50.0 and 10.0?(p?w)/w?50.0 are satisfied where: h denotes the height of each of the turbulent-flow
generating projections; p denotes a pitch of adjacent ones of the turbulent-flow generating projections in a tire rotation
direction; and w denotes a lower side width of each of the turbulent-flow generating projections in the cross-sectional shape,

wherein the turbulent-flow generating projections are provided at regular intervals in the tire circumferential direction,
wherein the pneumatic tire is a heavy-duty tire specified by the standards determined by The Tire and Rim Association, Inc.
Year Book in the United States of America.

US Pat. No. 9,370,972

TIRE HAVING CIRCUMFERENTIAL GROOVE FORMED WITH ONE INTRA-GROOVE

BRIDGESTONE CORPORATION, ...

1. A tire provided with a plurality of land portions formed by a main groove extending along a tire circumferential direction,
wherein
the land portions include a first land portion having a first groove wall forming one wall surface of the main groove, and
a second land portion having a second groove wall forming the other wall surface of the main groove,

the main groove is formed with one intra-groove recessed in a tire inner direction from a surface of the main groove, the
intra-groove being extended along the tire circumferential direction,

the intra-groove comprises:
a first circumferential groove portion extending along the tire circumferential direction on the first groove wall;
a first inclined portion extending from the first groove wall toward the second groove wall on a groove bottom of the main
groove, the first inclined portion being inclined with respect to the tire circumferential direction;

a second circumferential groove portion extending along the tire circumferential direction on the second groove wall; and
a second inclined portion extending from the second groove wall toward the first groove wall on the groove bottom of the main
groove, the second inclined portion being inclined with respect to the tire circumferential direction,

a groove width of the first circumferential groove portion and a groove width of the second circumferential groove portion
are different from a groove width of a first inclined portion and a groove width of a second inclined portion, and

the first circumferential groove portion, the first inclined portion, the second circumferential groove portion, and the second
inclined portion are formed repeatedly along the tire circumferential direction.

US Pat. No. 9,358,549

METHOD FOR MANUFACTURING CARBIDE FOR REINFORCING RUBBER ARTICLES

BRIDGESTONE CORPORATION, ...

1. A method for manufacturing a carbide for reinforcing rubber articles comprising the steps of:
mixing a carbide, obtained by thermal decomposition or incomplete combustion of polymer waste and pulverized by grinding,
with carbon black to obtain a mixture of the carbide and the carbon black; and

granulating the mixture in an amount range of 1 kg to 2 kg using a granulating machine at a rotation speed of 70 rpm to 130
rpm and for a time range of 110 s to 130 s.

US Pat. No. 9,233,579

TIRE

Bridgestone Corporation, ...

1. A tire comprising:
a circumferential groove extending in a tire circumferential direction, and
a land portion being adjacent to the circumferential groove and extending in the tire circumferential direction, and
an inner land portion located closer to a tire equator line than the land portion,
wherein
in-groove grooves which are recessed from a groove bottom of the circumferential groove inwardly in a tire radial direction
are formed in the circumferential groove,

each of the in-groove grooves includes an inclined portion extending with an inclination relative to the tire circumferential
direction,

a groove portion extending in an extending direction of the inclined portion is formed in the land portion,
at least one of end portions of the groove portion in the extending direction is terminated at inside of the land portion,
a circumferential narrow groove extending in the tire circumferential direction is formed in the inner land portion,
a groove width of the circumferential narrow groove is smaller than a groove width of the in-groove grooves,
an end of the circumferential narrow groove communicates with an inner circumferential groove extending in the tire circumferential
direction, and

another end of the circumferential narrow groove is terminated at inside of the inner land portion.

US Pat. No. 9,435,396

VIBRATIONPROOF DEVICE

BRIDGESTONE CORPORATION, ...

1. A vibrationproof device which is a liquid sealed vibrationproof device comprising:
a tubular first mounting member that is connected to either one of a vibration generating portion and a vibration receiving
portion;

a second mounting member that is connected to other one of the vibration generating portion and the vibration receiving portion;
an elastic body that elastically connects the first mounting member and the second mounting member to each other; and
a partition member that partitions a liquid chamber of the inside of the first mounting member into a main liquid chamber
of a lower side having the elastic body as a portion of a wall surface and an auxiliary liquid chamber of an upper side,

wherein a restricting passage is formed which communicates with the main liquid chamber and with the auxiliary liquid chamber
and in which a liquid column resonance is generated due to the fact that a liquid in the liquid chamber is circulated,

a sealed liquid is sealed in the liquid chamber, the sealed liquid contains a first liquid as a main liquid and a second liquid
as an added liquid which is insoluble in the first liquid,

a vapor pressure of the second liquid is higher than a vapor pressure of a main component of the first liquid in the same
temperature and a specific gravity of the second liquid is heavier than a specific gravity of the first liquid, and

the second liquid is dispersed into a plurality of places in the first liquid, when receiving a vibration.

US Pat. No. 9,387,638

VULCANIZED TIRE MANUFACTURING METHOD AND VULCANIZATION APPARATUS

BRIDGESTONE CORPORATION, ...

1. A vulcanized tire manufacturing method comprising:
vulcanizing a green tire supported by a bladder in a vulcanization vessel so as to obtain a vulcanized tire; and
sucking out gas from a space surrounding outer periphery of the bladder inside the vulcanization vessel after the vulcanized
tire is separated from the bladder,

wherein the gas is sucked out from the space surrounding outer periphery of the bladder inside the vulcanization vessel using
a vacuum device, and

wherein sucking out gas is performed from a central axis side of the vulcanized tire that is inside the vulcanization vessel.
US Pat. No. 9,403,919

POLYMERS FUNCTIONALIZED WITH A CARBOXYLIC OR THIOCARBOXYLIC ESTER CONTAINING A SILYLATED AMINO GROUP

Bridgestone Corporation, ...

1. A method for preparing a functionalized polymer, the method comprising the steps of:
(i) polymerizing monomer with an anionic initiator to form a reactive polymer; and
(ii) reacting the reactive polymer with a carboxylic or thiocarboxylic ester containing a silylated amino group, where the
carboxylic or thiocarboxylic ester containing a silylated amino group is selected from the group consisting of alkenecarboxylic
esters, alkynecarboxylic esters, a cycloalkenecarboxylic esters, cycloalkynecarboxylic esters, heterocyclic carboxylic esters,
alkenethiocarboxylic esters, alkynethiocarboxylic esters, cycloalkenethiocarboxylic esters, cycloalkynethiocarboxylic esters,
and heterocyclic thiocarboxylic esters.

US Pat. No. 9,315,589

PROCESSES FOR THE REMOVAL OF RUBBER FROM NON-HEVEA PLANTS

Bridgestone Corporation, ...

1. A method of increasing the rubber recovery from non-Hevea plants comprising:
A. utilizing briquettes comprising (i) compressed chopped plant matter having an average size of 1.5? or less, comprising
bagasse, rubber, resin, residual water and (ii) no more than 5 weight % leaves from a non-Hevea plant, wherein the briquettes have a density that is 40-325% higher than the density of the non-compressed plant matter;

B. subjecting the briquettes to an organic solvent extraction process whereby the briquettes are mixed with at least one polar
organic solvent and at least one non-polar organic solvent to form a slurry that contains plant matter, organic solvents and
0.5-10 weight % water; and

C. processing the slurry to remove bagasse and resin and recover at least 95-99% by weight of the rubber contained within
the briquettes.

US Pat. No. 9,365,080

TIRE

BRIDGESTONE CORPORATION, ...

1. A tire comprising a decoration portion at a tire side portion, the decoration portion including:
decoration elements that include first ridges that are inclined in a first direction with respect to a tire circumferential
direction, and that are inclined in a second direction that is a different direction to the first direction; and second ridges
that are smaller than the first ridges in at least one of the height or width; and

first depressions that are inclined with respect to the tire circumferential direction, that divide the decoration elements
into two or more regions, and that make portions of the first ridges that are inclined in the first direction non-continuous
in the tire circumferential direction, wherein the decoration elements comprise:

first decoration elements, outer edge portions of which are formed by the first ridges, inner sides of the outer edge portions
being smooth surfaces; and second decoration elements, outer edge portions of which are formed by the first ridges, the second
ridges being arrayed at inner sides of the outer edge portions,

and wherein at least a portion of the first ridges are inclined with respect to the first direction and are adjacent to one
another, and second depressions are formed between the adjacent first ridges, and wherein decoration element rows are formed
by the first decoration elements and the second decoration elements being arranged alternately along the second depressions.

US Pat. No. 9,348,953

SWING SIMULATION SYSTEM, SWING SIMULATION APPARATUS, AND SWING SIMULATION METHOD

BRIDGESTONE CORPORATION, ...

1. A simulation system for simulating a behavior of a golf club during a swing made by a golfer using the golf club, comprising:
at least two imaging devices for capturing images of at least three identification features capable of locating a closed virtual
plane, defined by the at least three identification features, that follows a grip of the golf club during the swing; and

a simulation apparatus for simulating the behavior of the golf club during the swing, based on position information on the
virtual plane.

US Pat. No. 9,284,129

CONVEYOR BELT APPARATUS

BRIDGESTONE CORPORATION, ...

1. A conveyor belt apparatus comprising:
an endless belt-shaped conveyor belt that transports transport material;
a wear measuring device that measures an amount of wear of a surface of the conveyor belt on which the transport material
has been loaded;

a revolution counting device that counts a number of revolutions of the conveyor belt; and
a revolution detecting device that detects a start and a finish of each revolution of the conveyor belt,
wherein the wear measuring device is formed by a magnetic sensor that measures as the amount of wear a magnetic field of a
first magnetic field generating device that has been installed on the conveyor belt,

the revolution detecting device detects as the start and finish of one revolution of the conveyor belt a magnetic field of
a second magnetic field generating device that is installed on the conveyor belt,

the wear measuring device also functions as the revolution detecting device, and
the revolution counting device counts the number of revolutions by adding one revolution to the number of revolutions made
by the conveyor belt each time one revolution has finished based on detection data from the revolution detecting device.

US Pat. No. 9,194,079

METAL FILAMENT BODY CONNECTING METHOD AND CONNECTING DEVICE

BRIDGESTONE CORPORATION, ...

1. A metal filament body connecting method of connecting facing metal filament bodies, in which
a pair of fixing members fixing the facing metal filament bodies, and a rotating body including cutout which is rotatable
at the gap between the pair of fixing members are arranged; both end portions of a parallel portion of a metal filament body
formed by juxtaposing the facing metal filament bodies are fixed by the pair of fixing members;

an approximately central portion of the parallel portion of the metal filament body is arranged in a cutout of the rotating
body; and then, the facing metal filament bodies are twisted together by rotating the rotating body, wherein

the pair of fixing members comprises a cutout and a pressing member; both end portions of parallel portion of the facing metal
filament bodies are arranged in cutouts of the pair of fixing members; and the both end portions are fixed by pressing with
the pressing member, and

the pressing member comprises a plate spring and a claw member for fixing the plate spring.

US Pat. No. 9,366,308

VIBRATION DAMPING DEVICE

BRIDGESTONE CORPORATION, ...

1. A vibration damping device comprising:
a tubular first mounting member that is coupled to any one of a vibration generating portion and a vibration receiving portion;
a second mounting member that is coupled to the other of the vibration generating portion and the vibration receiving portion
and is inserted through the first mounting member; and

an elastic body that is coupled to both of the mounting members,
wherein a plurality of pressure-receiving liquid chambers, in which a liquid is enclosed and of which portions of wall surfaces
are constituted of the elastic body, are disposed within the first mounting member,

wherein the pressure-receiving liquid chambers have a pair of first pressure-receiving liquid chambers that communicate with
each other through a first limiting path and a second pressure-receiving liquid chamber that communicates with an auxiliary
liquid chamber, in which the liquid is enclosed, through a second limiting path,

wherein the pair of first pressure-receiving liquid chambers sandwich the second mounting member therebetween,
wherein the second pressure-receiving liquid chamber is arranged side by side with the second mounting member in an orthogonal
direction orthogonal to both an axial direction of the first mounting member and a sandwiching direction in which the pair
of first pressure-receiving liquid chambers sandwich the second mounting member,

wherein the second mounting member extends over the entire length of each of the pair of first pressure-receiving liquid chambers
and the second pressure-receiving liquid chamber in the axial direction, and

wherein the first limiting path does not contact the auxiliary liquid chamber.

US Pat. No. 9,312,567

NON-AQUEOUS ELECTROLYTE ADDITIVE, NON-AQUEOUS ELECTROLYTE, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY

BRIDGESTONE CORPORATION, ...

1. A non-aqueous electrolyte additive comprising:
at least one compound selected from a first compound group consisting of phosphazene compounds represented by the following
general formula (1):

(NPR2)n  (1)

wherein each of the total number (2×n) of R groups independently represents fluorine or hexafluoroisopropoxy group, one of
the Rs represents the hexafluoroisopropoxy group, and n is from 3 to 14; and

at least one compound selected from a second compound group consisting of borate represented by the following general formula
(2), bis(oxalato)borate, difluoro(oxalato)borate, tris(oxalato)phosphate, difluoro(bisoxalato)phosphate, and tetrafluoro(oxalato)phosphate:


wherein Aa+ represents a cation, and a represents a valency of the cation.

US Pat. No. 9,273,165

LANTHANIDE COMPLEX CATALYST AND POLYMERIZATION METHOD EMPLOYING SAME

Bridgestone Corporation, ...

1. A process for providing a polymer, said process comprising contacting ethylenically unsaturated hydrocarbon monomers that
comprise at least one polyene compound and at least one olefin compound with a catalyst composition that comprises an alkylating
agent and a lanthanide metal complex of the general formula
where
M represents a lanthanide metal atom;
L represents a neutral Lewis base;
z is an integer of from 0 to 3 inclusive;
R1 is a substituted or unsubstituted hydrocarbyl group;

each R2 independently is H, a halogen atom, or R1, with the proviso that two or more R2 groups or R1 and one or more R2 groups, together with the atoms to which each is bonded, can form a ring structure; and

each R3 represents —N[SiH(CH3)2]2, and allowing said monomers to polymerize, thereby providing said polymer.

US Pat. No. 9,296,880

RUBBER COMPOSITION FOR CONVEYOR BELTS, CONVEYOR BELT, AND BELT CONVEYOR

BRIDGESTONE CORPORATION, ...

1. A rubber composition for conveyor belts, comprising:
(A) 100 parts by mass of a dienic polymer, and
(B) from 25 to 55 parts by mass of carbon black including carbon black (b-1) having a nitrogen-adsorbing specific surface
area of from 60 to 100 m2/g and a dibutyl phthalate oil absorption of less than 110 ml/100 g, and carbon black (b-2) having a nitrogen-adsorbing specific
surface area of less than 60 m2/g and a dibutyl phthalate oil absorption of at least 110 ml/100 g.

US Pat. No. 9,290,218

CRAWLER CORE FOR MEMBER AND RUBBER CRAWLER

BRIDGESTONE CORPORATION, ...

1. A crawler core member that configures an endless crawler belt when a plurality of the core members are disposed at uniform
intervals along a peripheral direction and are coupled together with the peripheral direction adjacent core members, each
of the core members comprising:
an engagement shaft portion extending in the crawler belt width direction;
an engagement portion integrally formed to the engagement shaft portion and engaging with an engagement shaft portion of an
adjacent of the core members;

a pair of wing portions integrally formed to the engagement shaft portion and respectively disposed at both width direction
sides of the engagement shaft portion, each of the wing portions extending in the width direction; and

a restriction portion that, in an engaged state of the engagement portion of the core member and the engagement shaft portion
of the adjacent core member, restricts movement of the engagement shaft portion towards the peripheral outside,

wherein the adjacent core members are coupled together by the engagement shaft portion of the adjacent core member moving
towards the peripheral inside of the crawler core member and engaging with the engagement portion of the core member, and
the core members adjacent to each other are connected by tension in the peripheral direction.

US Pat. No. 9,222,536

RUBBER COMPOSITION FOR RUBBER VIBRATION INSULATOR

BRIDGESTONE CORPORATION, ...

1. A rubber composition for rubber vibration insulator comprising:
a rubber component comprising high-cis-high-vinyl butadiene rubber containing 85 to 93% of cis-1,4 bonds and 5 to 13% of vinyl
bonds,

sulfur, and
a bismaleimide compound,
wherein the high-cis-high-vinyl butadiene rubber is included in an amount of from 10 to 50 parts by weight per 100 parts by
weight of the rubber component, the sulfur is included in an amount of from 0.4 to 1 part by weight, per 100 parts by weight
of the rubber component.

US Pat. No. 9,327,555

RUBBER ARTICLE-REINFORCING STEEL CORD AND PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A steel cord for reinforcing rubber articles with a multi-twisted structure comprising a core strand and a plurality of
sheath strands,
wherein the core strand is formed by twisting a plurality of filaments,
wherein each of the sheath strands is formed by twisting a plurality of filaments,
wherein the core strand is constituted of an at least three-layer-twisted structure formed by twisting core filaments and
sheath filaments,

wherein the multi-twisted structure is formed by twisting the plurality of sheath strands around the core strand,
wherein the lowest tensile breaking strength of filament bs (N) and the tensile breaking strength of steel cord Bc (N) satisfy
the relationship represented by the following formula:

bs/Bc×100?0.65,

wherein there are seven to nine sheath strands twisted around the core strand, and
wherein the core strand has a structure of 3+9+11.
US Pat. No. 9,181,417

RUBBER COMPOSITION

BRIDGESTONE CORPORATION, ...

1. A scorch resistant rubber composition comprising:
0.3 to 2.5 parts by mass of aldehydeamines;
0.1 to 1.5 part by mass of tetra(2-ethylhexyl)thiuram disulfide;
0.1 to 2.5 parts by mass of a thiazole vulcanization accelerator; and
30 to 60 parts by mass of carbon black,
based on 100 parts by mass of a rubber component.

US Pat. No. 9,145,032

TIRE

BRIDGESTONE CORPORATION, ...

1. A tire comprising at least a land portion formed by a main groove extending in a tire circumferential direction, the land
portion including: a first land portion having a first groove wall forming the main groove; and a second land portion having
a second groove wall forming the main groove, wherein
the first groove wall and the second groove wall meander in the tire circumferential direction in a tread surface view,
a groove width of the main groove in a tread width direction changes at a predetermined repetition cycle in the tire circumferential
direction,

the main groove includes:
a wide groove portion in which the groove width is a predetermined width; and
a narrow groove portion which is continuous with the wide groove portion and which is narrower than the predetermined width,
and

a relationship of ?1>?2 is satisfied in a cross section taken in the tread width direction and a tire radial direction where ?1 refers to an angle formed between a tire normal line extending in the tire radial direction and at least one of the first
groove wall and the second groove wall forming the wide groove portion and ?2 refers to an angle formed between the tire normal line and at least one of the first groove wall and the second groove wall
forming the narrow groove portion,

wherein the first groove wall and the second groove wall are symmetric to each other in the tread surface view with a center
line being an axis of symmetry, the center line passing through a center of the main groove in the tread width direction.

US Pat. No. 9,283,813

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire comprising, in a tread surface, a groove partitioned by at least three groove sides in plan view,
wherein the groove sides extending in a longitudinal direction of the groove have groove walls extending toward a groove bottom,
one or more of the groove walls being formed, at least in part thereof, as tapered surfaces; and

wherein the tapered surfaces each form an angle with a plane perpendicular to the tread surface, which varies in an extending
direction of the groove side,

wherein at least a portion of the groove has a V-shape in a vertical cross-section along the extending direction of the groove,
wherein the groove walls forming the V-shape in the vertical cross-section are each inclined with respect to the plane perpendicular
to the tread surface.

US Pat. No. 9,254,420

GOLF BALL COMPOSITION AND GOLF BALL

BRIDGESTONE SPORTS CO., L...

1. A method for preparing a golf ball composition comprising:
a step of producing a diene polymer (A) including not more than 1.5% of components having a molecular weight of 30,000 or
less; which is synthesized using as a catalyst at least one type of complex selected from the group consisting of metallocene
complexes of general formulae (I) and (II) below, and half-metallocene cation complexes of general formula (III) below, and
using an organolaluminum compound of the general formula AIRR?R? wherein R and R? are each independently a C1-10 hydrocarbon group, a chlorine or a hydrogen atom, and R? is a C1-10 hydrocarbon group in an amount of from 83.3 to 500 moles per mole of the metallocene complex as a co-catalyst; wherein the
center metal M in general formulae (I), (II) and (III) is gadolinium:


wherein in formula (I), each occurrence of CpR is a substituted or unsubstituted indenyl; Ra to Rf are each independently an alkyl group of 1 to 3 carbons or a hydrogen atom; L is a neutral Lewis base; and w is an integer
from 0 to 3;


wherein in formula (II), each occurrence of CpR is a substituted or unsubstituted indenyl; X? is a hydrogen atom, a halogen atom, an alkoxide group, a thiolate group, an
amide group, a silyl group or a hydrocarbon group of 1 to 20 carbons; L is a neutral Lewis base; and w is an integer from
0 to 3;


wherein in formula (III), CpR? is a substituted or unsubstituted cyclopentadienyl, indenyl or fluorenyl; X is a hydrogen atom, a halogen atom, an alkoxide
group, a thiolate group, an amide group, a silyl group or a hydrocarbon group of 1 to 20 carbons; L is a neutral Lewis base;
w is an integer from 0 to 3; and [B]? is a non-coordinating anion; and then

a step of compounding the diene polymer (A) with an unsaturated carboxylic acid and/or a metal salt thereof (B), and an organic
peroxide (D) to make up the golf ball composition.

US Pat. No. 9,242,145

GOLF BALL COMPOSITION AND GOLF BALL

BRIDGESTONE SPORTS CO., L...

1. A method for preparing a golf ball composition comprising:
a step of producing a diene polymer (A) having a peak top molecular weight (Mp) on a molecular weight distribution curve measured
using gel permeation chromatography (GPC) of at least 40×104 and not more than 100×104; which is synthesized using as a catalyst at least one type of complex selected from the group consisting of metallocene
complexes of general formulae (I) and (II) below, and half-metallocene cation complexes of general formula (III) below, and
using an organolaluminum compound of the general formula AIRR?R? wherein R and R? are each independently a C1-10 hydrocarbon group, a chlorine or a hydrogen atom, and R? is a C1-10 hydrocarbon group in an amount of from 100 to 500 moles per mole of the metallocene complex as a co-catalyst; wherein the
center metal M in general formulae (I), (II) and (III) is gadolinium:


wherein in formula (I), each occurrence of CpR is a substituted or unsubstituted indenyl; Ra to Rf are each independently an alkyl group of 1 to 3 carbons or a hydrogen atom; L is a neutral Lewis base; and w is an integer
from 0 to 3;


wherein in formula (II), each occurrence of CpR is a substituted or unsubstituted indenyl; X? is a hydrogen atom, a halogen atom, an alkoxide group, a thiolate group, an
amide group, a silyl group or a hydrocarbon group of 1 to 20 carbons; L is a neutral Lewis base; and w is an integer from
0 to 3;


wherein in formula (III), CpR? is a substituted or unsubstituted cyclopentadienyl, indenyl or fluorenyl; X is a hydrogen atom, a halogen atom, an alkoxide
group, a thiolate group, an amide group, a silyl group or a hydrocarbon group of 1 to 20 carbons; L is a neutral Lewis base;
w is an integer from 0 to 3; and [B]? is a non-coordinating anion; and then

a step of compounding the diene polymer (A) with an unsaturated carboxylic acid and/or a metal salt thereof (B), and an organic
peroxide (D) to make up the golf ball composition.

US Pat. No. 9,074,035

COPOLYMER OF CONJUGATED DIENE COMPOUND AND NON-CONJUGATED OLEFIN, RUBBER COMPOSITION, CROSS-LINKED RUBBER COMPOSITION AND TIRE

BRIDGESTONE CORPORATION, ...

1. A copolymer of a conjugated diene compound and a non-conjugated olefin, wherein
the copolymer is obtained by polymerization in the presence of a catalyst represented by the following general formula (I):

wherein M represents a lanthanoid element, scandium, or yttrium; CpR each independently represents an unsubstituted or substituted indenyl group; Ra to Rf each independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms; at least one of Ra to Rf represents a hydrogen atom; L represents a neutral Lewis base; and w represents an integer of 0 to 3,

or the following general formula (XV):

wherein M1 represents a lanthanoid element, scandium or yttrium; CpR each independently represents an unsubstituted or substituted indenyl group; RA and RB each independently represents a hydrocarbon group having 1 to 20 carbon atoms, the RA and RB each is ?-coordinated with M1 and Al; and RC and RD each independently represents a hydrocarbon group having 1 to 20 carbon atoms or a hydrogen atom,

the conjugated diene unit has a cis-1,4 bond content of greater than 70.5% and the non-conjugated olefin is contained in an
amount of 10 mol % or more and 50 mol % or less, and

the non-conjugated olefin is an acyclic olefin, and
the copolymer has a weight-average molecular weight (Mw) of 50,000 to 600,000.

US Pat. No. 9,211,763

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

2. A pneumatic tire comprising at least one carcass extending toroidally between a pair of bead portions as a skeleton, and
at least two belt layers each formed by rubberizing a plurality of steel cords arranged obliquely with respect to the tire
circumferential direction on the outside in the tire radial direction of the crown portion of the carcass, wherein
the steel cord consists of two core wires and six sheath wires twisted together around the core wires; the interval between
adjacent steel cords in each belt layer is not less than 1.09 mm and not more than 1.39 mm; and the gauge of the belt layer
is not less than 1.22 mm and not more than 1.60 mm,

in the steel cord, the core wires are arranged in parallel without being twisted together,
in the steel cord, the wire diameter dc of the core wire differs from the wire diameter ds of the sheath wire, and
the ratio of the wire diameter ds of the sheath wire to the wire diameter dc of the core wire satisfies ds/dc>1.2.

US Pat. No. 9,428,619

INTERPOLYMERS CONTAINING ISOBUTYLENE AND DIENE MER UNITS

Bridgestone Corporation, ...

1. A method of producing a block polymer comprising mer units derived from at least two reactants, the method comprising reacting
a functionalized diene polymer with a functionalized butyl polymer, wherein the functionalized diene polymer and butyl polymer
each include a functional group that is not a living end of the polymer; wherein the functional group of functionalized diene
polymer reacts with the functional group on the functionalized butyl polymer.

US Pat. No. 9,423,320

TIRE RUBBER INDEX CALCULATING METHOD, DEVICE, AND COMPUTER-READABLE STORAGE MEDIUM

BRIDGESTONE CORPORATION, ...

1. A tire rubber index calculating method comprising:
a tire frictional energy measuring step of measuring, by a processor and a frictional energy measuring device comprising a
force applying device, an image capturing device and a shear force measuring device, tire frictional energies of a tire in
plural tire input conditions applied to the tire, the tire frictional energy measuring step including:

applying, by the force applying device, the plural tire input conditions to the tire;
capturing, by the image capturing device, an image of the contact patch of the tire and measuring a slippage of the tire contact
patch from the image;

measuring, by the shear force measuring device, a shear force applied to the tire by the force applying device; and
calculating, by the processor, tire frictional energies of a tire on the basis of the shear force and the slippage of the
tire contact patch and storing the tire frictional energies in a memory;

a setting step including:
setting, by the processor, sample input conditions for a sample of the same material as the tire on the basis of the tire
frictional energies in the tire input conditions that were measured;

obtaining, by the frictional energy measuring device, sample frictional energies of the sample in the sample input conditions;
storing, by the processor, the sample frictional energies in the memory; and
setting, by the processor, measurement conditions for measuring sample amounts of wear of the sample on the basis of the tire
frictional energies in the tire input conditions that were measured and the sample frictional energies that were obtained
for the sample input conditions;

a sample amount of wear measuring step of measuring, by a Lambourne testing device, the sample amounts of wear of the sample
in the measurement conditions that were set and storing the sample amounts of wear that were measured in the memory; and

a rubber index calculating step of calculating, by the processor, a rubber index of the tire on the basis of the sample frictional
energies and the sample amounts of wear that were measured, wherein

the setting step further includes:
a step of calculating, by the processor, per type of the tire input conditions, frictional energy functions representing the
correspondence relationships between the tire input conditions and the tire frictional energies,

a step of calculating, by the processor, expected values of the tire frictional energies on the basis of frequency data representing
the relationships between tire inputs that were measured in actual vehicle travel using the tire and the frequencies of the
tire inputs and the frictional energy functions per type of the tire input conditions,

a sample input condition setting step of setting, by the processor, a sample input condition applied to the sample for measuring,
by the frictional energy measuring device, the sample frictional energy of the sample,

a sample frictional energy measuring step of repeatedly measuring, by the frictional energy measuring device, the sample frictional
energy of the sample in the sample input condition that was set and measuring the sample frictional energy while changing
the sample input condition until the sample frictional energy that has been measured matches the expected value of the tire
frictional energy, and

a sample amount of wear measurement condition setting step of setting, by the processor, as a measurement condition for measuring
the sample amount of wear, the sample input condition in which the sample frictional energy that was measured matches the
expected value of the tire frictional energy, and

wherein the sample amount of wear measuring step comprises measuring, by the Lambourne testing device, the sample amount of
wear of the sample in the measurement condition that was set in the sample amount of wear measurement condition setting step.

US Pat. No. 9,353,205

PROCESSES FOR THE PREPARATION OF HIGH-CIS POLYDIENES

Bridgestone Corporation, ...

1. A solution polymerization process for producing a high-cis polydiene, comprising:
polymerizing at least one conjugated diene monomer in an organic solvent in the presence of at least one thiol compound and
a lanthanide-based catalyst composition to produce a polydiene having a cis-1,4-linkage of 90-99%,

wherein the at least one thiol compound is represented by the general formula R—S—H, where R is a hydrocarbyl group or a substituted
hydrocarbyl group;

wherein the lanthanide-based catalyst composition comprises (a) a lanthanide compound, (b) an alkylating agent including an
aluminoxane, and (c) a halogen source, where (c) may optionally be provided by (a), (b), or both (a) and (b); and

wherein the molar ratio of the at least one thiol compound to the lanthanide compound ranges from 0.01:1 to 100:1.

US Pat. No. 9,359,026

RUBBER CRAWLER

BRIDGESTONE CORPORATION, ...

1. A rubber crawler comprising:
an endless rubber body that is trained around a plurality of wheels;
a main cord layer that is incorporated within the endless rubber body and includes a main cord configured from a plurality
of twisted strands covered with rubber, the main cord extending along a circumferential direction of the endless rubber body;
and

a bias cord layer that is incorporated within the endless rubber body further to a circumferential outside of the endless
rubber body than the main cord layer and configured from at least one bias ply that is formed from a plurality of bias cords
extending at an angle with respect to the circumferential direction, the at least one bias ply and the main cord layer disposed
side-by-side along the circumferential direction and covered in rubber such that bias cords of the bias ply at a circumferential
outermost side of the endless rubber body are, as viewed from the circumferential outside, angled toward an opposite side,
with respect to the circumferential direction, from the angled side of the strands,

wherein
the endless rubber body comprises a first side on a left side in a width direction of the endless rubber body relative to
a center line of the endless rubber body in the circumferential direction, and a second side on a right side in the width
direction relative to the center line, and

in both the first side and the second side, a direction of the plurality of twisted strands of the main cord, and a direction
of the bias cords of the bias ply at the circumferential outermost side of the endless rubber body are, as viewed from the
circumferential outside, angled toward the opposite side, with respect to the circumferential direction.

US Pat. No. 9,266,396

PNEUMATIC RADIAL TIRE FOR PASSENGER CARS

BRIDGESTONE CORPORATION, ...

1. A pneumatic radial tire for passenger cars, provided with a pair of bead portions, a carcass formed by a ply of radial
cords toroidally extending between the bead portions, and a tread, comprising:
a section width W and an outside diameter L such that a ratio W/L is 0.24 or less;
a tread edge main groove in at least half of a surface of the tread divided by a tire equatorial plane, the tread edge main
groove being adjacent to a tread edge, separated from the tread edge in a tread width direction by a distance of at least
25% of a tread width TW, and extending in a tread circumferential direction; and

at least one transverse groove in an adjacent land portion adjacent to a tread edge land portion defined by the tread edge
main groove and the tread edge, the at least one transverse groove extending from the tread edge main groove in the tread
width direction and terminating within the adjacent land portion,

wherein the at least one transverse groove is provided in only one of the halves of the pneumatic radial tire in the tread
width direction, and

wherein the at least one transverse groove comprises a plurality of transverse grooves at intervals in the tread circumferential
direction of E/2 (mm) or less, where E is a contact length of the tire in mm.

US Pat. No. 9,188,191

VIBRATIONPROOF DEVICE

BRIDGESTONE CORPORATION, ...

1. A vibrationproof device which is a liquid sealed vibrationproof device comprising:
a tubular first mounting member that is connected to either one of a vibration generating portion and a vibration receiving
portion;

a second mounting member that is connected to other one of the vibration generating portion and the vibration receiving portion;
an elastic body that elastically connects the first mounting member and the second mounting member to each other; and
a partition member that partitions a liquid chamber of the inside of the first mounting member into a main liquid chamber
of an upper side having the elastic body as a portion of a wall surface and an auxiliary liquid chamber of a lower side,

wherein a restricting passage is formed which communicates with the main liquid chamber and with the auxiliary liquid chamber
and in which a liquid column resonance is generated due to the fact that a liquid in the liquid chamber is circulated,

a sealed liquid is sealed in the liquid chamber, the sealed liquid contains a first liquid as a main liquid and a second liquid
as an added liquid which is insoluble in the first liquid,

a vapor pressure of the second liquid is higher than a vapor pressure of a main component of the first liquid in the same
temperature and a specific gravity of the second liquid is lighter than a specific gravity of the first liquid and

the second liquid is dispersed into a plurality of places in the first liquid, when receiving a vibration.
US Pat. No. 9,056,925

PROCESS FOR PRODUCTION OF MODIFIED CONJUGATED DIENE POLYMERS, MODIFIED CONJUGATED DIENE POLYMERS PRODUCED BY THE PROCESS, RUBBER COMPOSITIONS, AND TIRES

BRIDGESTONE CORPORATION, ...

1. A process for producing a modified conjugated diene based polymer, the process comprising
a step (a) of reacting a silicon compound with a conjugated diene based polymer having an active end so that the reaction
takes places at the active end, the silicon compound having a protected primary amino group in the molecule thereof and a
silicon atom to which a hydrocarbyloxy group and a reactive group are bonded, to thereby modify the active end, and

a step (b) of performing condensation reaction which involves the group derived from the silicon compound and bonded to the
active end of the conjugated diene based polymer, in the presence of a titanium compound serving as a titanium-based condensation-accelerating
agent,

wherein the protected amino group is capable of being deprotected by hydrolysis to be a primary amino group, and
wherein the titanium compound is at least one selected from the group consisting of tetrakis(2-ethyl-1,3-hexanediolato)titanium
and titanium di-n-butoxide bis(2,4-pentanedionate).

US Pat. No. 9,051,949

CLIP FOR ATTACHING EA MEMBER, AND EA MEMBER

BRIDGESTONE CORPORATION, ...

1. A clip for attaching an EA member to a member, the clip comprising:
a cylindrical portion; and
flanges provided at both ends of the cylindrical portion,
wherein, in a base portion of at least one of the flanges, a penetrating portion that penetrates through the flange is formed,
wherein an opening area of the penetrating portion or penetrating portions is ¼ to ½ of an area of the flange,
wherein the penetrating portion is a long hole that extends along an outer circumference of the cylindrical portion, and
wherein a plurality of the long holes are formed so as to be spaced apart from one another in a circumferential direction
of the cylindrical portion.

US Pat. No. 9,109,098

CARBON BLACK, RUBBER COMPOSITION AND PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. Carbon black, the standard deviation ? of aggregate size distribution of which is obtained by a light scattering method
using an ultraviolet ray, the standard deviation a satisfying the expression (1):
?
wherein 24M4DBP represents the dibutyl phthalate absorption number (cm3/100 g) of compressed sample, and Dst (nm) is a Stokes' equivalent diameter providing the mode in aggregate size distribution obtained by a centrifugal sedimentation
method;

wherein 24M4DBP is 106 to 120 cm3/100 g;

wherein 1.3<24M4DBP/Dst<1.5; and

wherein 70

US Pat. No. 9,368,663

SOLAR CELL SEALING FILM AND SOLAR CELL USING THE SEALING FILM

BRIDGESTONE CORPORATION, ...

1. A solar cell sealing film obtained from a composition consisting essentially of: ethylene-vinyl acetate copolymer,
an organic peroxide selected from a group consisting of 2,5-dimethylhexane 2,5-dihydroperoxide, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane,
di-tert-butylperoxide, dicumyl peroxide, 2,5-dimethyl-2,5-di(tert-butylperoxy)hexyne, tert-butylcumylperoxide, ?,??-bis(tert-butylperoxyisopropyl)benzene,
?,??-bis(tert-butylperoxy)diisopropylbenzene, 2,2-bis(tert-butylperoxy)butane, 1,1-bis(tert-butylperoxy)cyclohexane, 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane,
tert-butylperoxybenzoate, benzoyl peroxide, and 1,1-di(tert-hexylperoxy)-3,3,5-trimethylcyclohexane,

?-methacryloxypropyl trimethoxysilane as a silane-coupling agent, and triisodecyl phosphite as a phosphite compound,
the organic peroxide being contained in an amount of 1.3 to 1.8 parts by weight based on 100 parts by weight of the ethylene-vinyl
acetate copolymer,

the silane-coupling agent being contained in an amount of 0.05 to 1 part by weight based on 100 parts by weight of the ethylene-vinyl
acetate copolymer, the phosphite compound being contained in an amount of 0.05 to 1 part by weight based on 100 parts by weight
of the ethylene-vinyl acetate copolymer, and the content of vinyl acetate recurring unit of the ethylene-vinyl acetate copolymer
being in the range of 20 to 35% by weight.

US Pat. No. 9,724,968

MULTILAYER STRUCTURE, INNER LINER FOR PNEUMATIC TIRE, AND PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A multilayer structure comprising a barrier layer containing a gas barrier resin and an elastomer layer containing thermoplastic
elastomer,
wherein an outermost layer laminated uppermost among layers constituting the multilayer structure contains an elastomer component
that may heat-adhere to diene rubber,

wherein the elastomer component of the outermost layer is a polymer containing both of a vulcanizable diene moiety which is
derived from modified natural rubber, modified butadiene rubber, modified isoprene rubber, or modified styrene-butadiene rubber
and urethane bond therein so as to improve flexibility of the outermost layer and adhesion between the outermost layer and
an inner surface of a tire.

US Pat. No. 9,150,058

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire comprising:
in a tread portion, at least one block group, the block group comprising a plurality of independent blocks defined by grooves;
and

in the tread portion, at least one circumferential main groove comprising a see-through groove portion, the see-through groove
portion linearly extending in the tire circumferential direction,

wherein block number density D (pieces/mm2) of the block group is within a range of 0.003 (pieces/mm2) to 0.04 (pieces/mm2), the block number density D being represented by the formula:

D=a/{PL×W×(1?N/100)}

wherein PL (mm) represents a reference pitch length of the block in the block group, W (mm) represents a width of the block
group, a (pieces) represents the number of the blocks existing in a reference zone of the block group, the reference zone
being demarcated by the reference pitch length PL and the width W, and N (%) represents a negative ratio in the reference
zone,

wherein the at least one block group includes a block having a lateral length being larger than a longitudinal length thereof,
wherein in the block group, a distance BGL between blocks adjacent to each other in the tire circumferential direction is
larger than a distance BGO between blocks adjacent to each other in an oblique direction with respect to the tire circumferential
direction, and

wherein in the block group, a distance BGW between blocks adjacent to each other in the tire width direction is smaller than
a length BW of the blocks in the tire width direction.

US Pat. No. 9,358,843

TIRE

BRIDGESTONE CORPORATION, ...

1. A tire in which a first circumferential groove and a second circumferential groove extending in a tire circumferential
direction are formed and a plurality of block-shaped land portions are provided in the tire circumferential direction, outside
the first circumferential groove in a tread width direction, wherein
a first inclined groove and a second inclined groove are formed, the first inclined groove with a groove depth becoming larger
and a groove width in the tire circumferential direction becoming smaller as the first inclined groove extends toward the
inner side in the tread width direction, the second inclined groove with a groove depth becoming larger and a groove width
in the tire circumferential direction becoming smaller as the second inclined groove extends toward the outer side in the
tread width direction,

each of the block-shaped land portions includes a first land portion and a second land portion,
the first land portion, the second land portion, the first inclined groove, and the second inclined groove are disposed in
an area partitioned by a first inter-block microgroove and a first sipe on a first side in the tire circumferential direction,
a second inter-block microgroove and a second sipe on a second side in the tire circumferential direction, and by the first
circumferential groove and the second circumferential groove in the tread width direction,

on the first side of the area in the tire circumferential direction, the first inclined groove and the first land portion
continuous with the first inclined groove in the tread width direction are disposed and the first land portion extends toward
the second side of the area in the tire circumferential direction,

on the second side of the area in the tire circumferential direction, the second land portion extending toward the first side
of the area in the tire circumferential direction is disposed, and

the second inclined groove continuous with the second land portion is disposed between the first land portion and the second
land portion in the tread width direction.

US Pat. No. 9,358,838

TIRE

BRIDGESTONE CORPORATION, ...

1. A tire having a circumferential groove portion, a lateral groove portion, and a belt formed in a tread thereof, the circumferential
groove portion formed continuously in a tire circumferential direction, the lateral groove portion extending in a tread width
direction, the belt provided inside the tire, wherein
a width SW of the tire, an outer diameter OD, and a tire inner diameter RD defined by a diameter of a portion of the tire
in contact with a wheel in a state where the tire is fitted to the wheel, of the tire satisfy SW?175 mm, OD/SW?3.6, and OD/RD?1.4,
and

a groove area ratio which is a ratio of an area of grooves including the circumferential groove portion and the lateral groove
portion to a contact patch area of the tire is 25% or less,

wherein
a plurality of the circumferential groove portions are formed, and
the circumferential groove portion formed on an outer side of the vehicle in the tread width direction has a larger length
in the tread width direction.

US Pat. No. 9,873,238

INNER LINER FOR PNEUMATIC TIRE AND METHOD FOR PRODUCING THE SAME

KURARAY CO., LTD., Kuras...

1. An inner liner, comprising at least 17 resin-layers, the at least 17 resin-layers comprising:
a layer A comprising a resin composition comprising a gas barrier resin, and
a layer B comprising a resin composition comprising an elastomer,
wherein, the layer A and the layer B are alternately laminated in direct contact, a total number of the layer A and the layer
B being at least 17 and no greater than 129,

at least one selected from the group consisting of the resin composition in the layer A and the resin composition in the layer
B comprises a metal salt,

a content of the metal salt is at least 1 ppm and no greater than 10,000 ppm in terms of metal element equivalent,
an interlayer adhesive force between the layer A and the layer B is at least 1,210 g/15 mm,
an average thickness of the layer A in terms of a single layer is at least 0.01 ?m and no greater than 10 ?m,
an average thickness of the layer B in terms of a single layer is at least 0.01 ?m and no greater than 10 ?m,
the gas barrier resin is at least one selected from the group consisting of an ethylene-vinyl alcohol copolymer, a polyamide
resin, and a polyester resin,

the elastomer is at least one selected from the group consisting of a polyurethane based elastomer, a polyester based elastomer,
a polyamide based elastomer, and a fluorine contained resin based elastomer,

the resin composition of the layer A further comprises a carboxylic acid in an amount of at least 1 ppm and no greater than
10,000 ppm, and

the inner liner is suitable for a pneumatic tire.

US Pat. No. 9,469,706

POLYMERS FUNCTIONALIZED WITH UNSATURATED HETEROCYCLES CONTAINING A PROTECTED AMINO GROUP

Bridgestone Corporation, ...

1. A method for preparing a functionalized polymer, the method comprising the steps of:
(i) polymerizing monomers to form a reactive polymer having a reactive chain end, and
(ii) reacting the reactive polymer having a reactive chain end with an unsaturated heterocycle containing a protected amino
group, wherein the unsaturated heterocycle has at least one unsaturated bond located within at least one of the one or more
rings.

US Pat. No. 9,290,061

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire comprising:
a first circumferential direction groove provided to a tread, extending in the tire circumferential direction and formed with
alternating narrow groove-width portions and wide groove-width portions having a wider groove-width than the narrow groove-width
portions;

a second circumferential direction groove extending in the tire circumferential direction and provided further towards the
tire equatorial plane of the tread than the first circumferential direction groove;

a plurality of first intermediate lug grooves provided to the tread, each of the plurality of first intermediate lug grooves
extending in a direction so as to intersect the first circumferential direction groove and having a first end portion connected
to the first circumferential direction groove, and a second end portion connected to the second circumferential direction
groove with the plurality of first intermediate lug grooves provided such that one of the wide groove-width portions is positioned
on an extension line of each of the plurality of first intermediate lug grooves;

a plurality of second intermediate lug grooves provided to the tread, alternatively to the plurality of first intermediate
lug grooves in the tire circumferential direction, each of the plurality of second intermediate lug grooves extending in a
direction so as to intersect the first circumferential direction groove and having a first end portion connected to the first
circumferential direction groove, and a second end portion terminating inside intermediate land portions that are demarcated
by the first circumferential direction groove, the second circumferential direction groove, and first intermediate lug groove,
with the plurality of second intermediate lug grooves provided such that one of the wide groove-width portions is positioned
on an extension line of each of the plurality of second intermediate lug grooves;

another second circumferential direction groove, thereby forming a pair of second circumferential direction grooves provided
to the tread one on each side of the tire equatorial plane; and

central groove(s) provided to a central land portion between the pair of second circumferential direction grooves, the central
groove(s) extending in a direction so as to intersect the second circumferential direction grooves with the two end portions
of the central groove(s) respectively connected to each of the pair of second circumferential direction grooves and with a
groove-width at a first end portion side of the central groove(s) that differs from the groove-width at the second end portion
side,

wherein a step portion is formed in the first circumferential direction groove from each of the wide groove-width portions
to each of the narrow groove-width portions in a predetermined tire circumferential direction, wherein a width from a first
groove wall of the first circumferential direction groove to a second groove wall of the first circumferential direction groove
in a tire width direction decreases in the step portion along the predetermined tire circumferential direction,

wherein the second groove wall of the first circumferential direction groove is a groove wall of a shoulder land portion,
and

wherein the first circumferential direction groove is formed on the tread edge side of a region between the tire equatorial
plane and the tread edge.

US Pat. No. 9,415,636

TIRE, AND TIRE MANUFACTURING METHOD

BRIDGESTONE CORPORATION, ...

1. A tire comprising at least a circular tire frame formed of a thermoplastic resin material, wherein the tire frame has a
bead portion contacting a rim that is separately provided with the tire frame,
the tire including a resin coated reinforcing cord member and a tread provided on the circular tire frame in this order, the
resin coated reinforcing cord member forming a reinforcing cord layer wherein the resin coated reinforcing cord member is
wound around an outer circumferences of the tire frame,

the thermoplastic resin material including at least a polyamide-based thermoplastic elastomer,
the content ratio of the polyamide-based thermoplastic elastomer in the thermoplastic resin material is 50% by mass to 100%
by mass with respect to the total amount of the thermoplastic resin material;

the content of the resin material in the reinforcing cord layer is 20 mass % or more relative to the total amount of the materials
that constitute the reinforcing cord layer excluding the reinforcing cord; and

the resin coated reinforcing cord member in the reinforcing cord layer is a cord member that is coated with a resin material
of the same kind as the thermoplastic resin material that forms the tire frame; and

the tread is formed of a rubber, and the cord member does not directly come in contact with the rubber.

US Pat. No. 9,285,293

TIRE PERFORMANCE PREDICTION METHOD AND METHOD OF DESIGNING TIRE

BRIDGESTONE CORPORATION, ...

1. A tire performance prediction method of predicting performance of a tire on a snowy road surface based on a physical quantity
generated in at least any one of a tire model and a snow model, by using the tire model having a tread pattern deformable
by at least one of ground contact and rolling and a snow model representing the snowy road surface to be in contact with the
tire model, wherein
the snow model is modeled as an elasto-plastic body or a plastic model,
the snow model represents non-linearity of a volume compaction property of snow by a relation between a density of the snow
or a volume strain of the snow and a pressure on the snow,

the snow model represents a shear property of the snow by a relation between a yield stress of the snow and the pressure on
the snow, and

in the snowy-road-surface model represented by the snow model, the non-linearity of the volume compaction property of the
snow is expressed as a piecewise-linear continuous function which is based on the relation between the density of the snow
or the volume strain of the snow and the pressure on the snow, wherein

the piecewise-linear continuous function is sectioned in a unit of 0.1 MPa or smaller in a section where a stress of 0.5 MPa
or smaller is applied to snow, and the piecewise-linear continuous function is sectioned in a unit of 0.3 MPa or smaller in
a section where a stress if larger than 0.5 MPa is applied to snow.

US Pat. No. 9,272,584

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A wheel assembly comprising:
a rim; and
a pneumatic tire provided on the rim and comprising a carcass having a carcass body composed of a ply formed of a plurality
of carcass cords, covered with rubber material, toroidally extending between a pair of bead cores, and a carcass folded-back
portion where the carcass body wound around the bead core from inside toward outside of the tire and extended outside in a
tire radial direction, wherein

a gradual decrease region is provided, in which a distance between the carcass body and the carcass folded-back portion along
a line normal to the carcass body gradually decreases toward outside in the tire radial direction,

a first filling material and a second filling material sequentially arranged from the bead core toward outside in the tire
radial direction, are provided between the carcass body and the carcass folded-back portion located outside in a tire width
direction than the carcass body located,

a part of the first filling material and the second filling material contacts with the rubber material forming the carcass
body,

the end of the first filling material outside in the tire radial direction and an end of the second filling material inside
in the tire radial direction are overlapped in the tire width direction,

a thickness in the tire width direction of the first filling material at the end outside in the tire radial direction decreases
toward outside in the tire radial direction,

an end of the second filling material inside in the tire radial direction is located more inside in the tire radial direction
than a contact position in contact with a rim flange of the rim defined by standards for mounting the pneumatic tire in the
bead portion of the pneumatic tire,

a height CE from a rim base line, which is an axis line of the tire passing through a position in the rim defining a rim diameter,
to an end of the carcass folded-back portion, and a height OWH from the rim base line to a carcass maximum width portion of
the carcass body having a maximum width in the tire width direction, satisfy a relation of 0.850WH?CE?1.2OWH, and

a height KSH from the rim base line to the end of the first filling material outside in the tire radial direction, the height
OWH, and a height FH from the rim base line to the end of the rim flange outside in the tire radial direction, satisfy a relation
of 0.2?[(KSH?FH)/(OWH?FH)]?0.28, wherein:

the carcass has a parallel region where a distance between the carcass body and the carcass folded-back portion on the line
normal to the carcass body is constant,

an end of the first filling material outside in the tire radial direction is located in the parallel region, and
wherein a length on the parallel region extending in an extending direction of the carcass body is larger than the distance
between the carcass body and the carcass folded-back portion.

US Pat. No. 9,384,541

BEAD FILLER INSPECTION APPARATUS, BEAD FILLER INSPECTION PROGRAM AND BEAD FILLER INSPECTION METHOD

BRIDGESTONE CORPORATION, ...

1. A bead filler inspection apparatus comprising:
an imaging section that captures an image of a join portion of a bead filler formed by being wound onto a rotating support
body and joined, and a region containing a boundary between an outer edge of the bead filler and the support body;

an edge detection section that detects an edge corresponding to the boundary between the outer edge of the bead filler and
the support body based on an image obtained by the imaging section;

a computation section that computes distances between a reference model line, that runs along the rotation direction of the
support body and is determined based on an edge detected by the edge detection section, and each respective point on the edge
present in a region containing the join portion; and

a determination section that performs good/no-good determination on the join portion based on the distances.

US Pat. No. 9,127,109

PREPARATION OF FUNCTIONAL POLYMERS PHOSPHORUS-CONTAINING ORGANOMETAL INITIATORS

Bridgestone Corporation, ...

1. A method for preparing a functionalized polymer, the method comprising:
polymerizing conjugated diene monomer, optionally together with comonomer, using a phosphorus-containing organometal initiator,
where the phosphorus-containing organometal initiator is defined by the formula II:


where M is lithium, R1 and R2 are each independently monovalent organic groups, or where R1 and R2 join to form a divalent organic group, where R3, R4, and R5 are each independently hydrogen or monovalent organic groups, or where R3 and R4 join to form a divalent organic group, where R6 is a bond or a divalent organic group and where R7 is a monovalent organic group, or where the phosphorus-containing organolithium compound is defined by the Formula IV:


where M is lithium, R1 and R2 are each independently monovalent organic groups, or where R1 and R2 join to form a divalent organic group, where R3, R4, and R5 are each independently hydrogen or monovalent organic groups, or where R3 and R4 join to form a divalent organic group, and where R6 is a bond or a divalent organic group, and where R7 is a monovalent organic group.

US Pat. No. 9,849,610

INDUCTION HEATING DEVICE FOR MOLD

TOKUDEN CO., LTD., Kyoto...

1. A mold induction heating device for induction heating a mold that forms a hollow portion therein, comprising:
an upper plate that contacts an upper end face of the mold;
a lower plate that contacts a lower end face of the mold; and
an induction coil that is provided to each plate, and has a voltage applied thereto,
wherein each of the plates has a generally ring-shaped metal plate body in which is formed a recessed housing portion for
housing the induction coil, and a metal cover that closes the recessed housing portion in a state where the induction coil
is housed therein,

a cover placement portion is formed, and
a plurality of jacket chambers, in which a gas-liquid two phase heating medium is enclosed, are formed in the metal plate
body,

wherein in the jacket chambers, a lower surface of a coil adjacent portion that is adjacent to the induction coil has a portion
that is lower than a lower surface of portions other than the coil adjacent portion, and

the coil adjacent portions of the jacket chambers adjacent to each other are in communication with each other by a communication
passage.

US Pat. No. 9,487,888

CORD FOR REINFORCING RUBBER ARTICLES, AND PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire using a cord for reinforcing rubber articles in a ply cord of a carcass, the cord for reinforcing rubber
articles comprising:
a thread of ply-twisted cellulose fiber twisted with a thread of ply-twisted nylon fiber, wherein
a ply twist number of the nylon fiber is less than a ply twist number of the cellulose fiber, and
a content of nylon fiber in the cord is in a range from 17% to 45%.
US Pat. No. 9,228,072

METHOD FOR MANUFACTURING RUBBER COMPOSITION

BRIDGESTONE CORPORATION, ...

1. A method for producing a rubber composition containing a rubber component (A) of at least one selected from natural rubbers
and synthetic dienic rubbers, a filler containing an inorganic filler (B), a silane coupling agent (C) and a vulcanization
promoter (D), wherein the rubber composition is kneaded in multiple stages, and in the first stage of kneading, the rubber
component (A), all or a part of the inorganic filler (B), and all or a part of the silane coupling agent (C) are kneaded,
and then the vulcanization promoter (D) is added and further kneaded;
wherein the number of molecules of the vulcanization promoter (D) in the rubber composition in the first stage of kneading
is from 0.1 to 1.0 time the number of molecules of the silane coupling agent (C) therein.

US Pat. No. 9,056,928

PROCESSES FOR PREPARATION OF CYCLIC AND ACYCLIC DIENE COPOLYMER AND RUBBER COMPOSITION

Bridgestone Corporation, ...

1. A process for preparing a copolymer of an acyclic conjugated diene and a cyclic conjugated diene using a polymerization
catalyst system, comprising:
polymerizing at least one acyclic conjugated diene monomer with at least one cyclic conjugated diene monomer utilizing a polymerization
catalyst system comprising

(a) a transition metal compound or a lanthanide metal compound,
(b) an alkylating agent; and
(c) an inorganic halide alcoholate,
wherein the resulting copolymer contains at least 90% acyclic conjugated diene monomer, has a number average molecular weight
of between 40,000 and 300,000, and has a cis-bond content of at least 92% and at least a portion of the polymerization catalyst
system is preformed.

US Pat. No. 9,279,045

TIRE PREPARED BY USING RUBBER COMPOSITION CONTAINING MODIFIED POLYMER

BRIDGESTONE CORPORATION, ...

1. A tire prepared by using a rubber composition obtained by compounding a modified conjugated diene base polymer, into which
at least one functional group selected from a hydroxysilyl group, an alkoxysilyl group, an amino group or a halogen atom is
introduced, precipitated silica which is produced by a precipitation process in which an alkali silicate and a mineral acid
are added to an alkali silicate aqueous solution prepared in advance, and at least one silane coupling agent selected from
the group consisting of compounds represented by the following formulae (VI), (VII) and (VIII),
wherein in the precipitated silica, a cetyltrimethylammonium bromide-adsorbing specific surface area (CTAB) (m2/g) and the mode Aac in diameters (nm) of primary aggregates determined by acoustic measurement of particle size distribution satisfy equation
(A) shown below, and an ignition loss, defined as mass reduction % when heated at 750° C. for 3 hours, and a heating loss,
defined as mass reduction % when heated at 105° C. for 2 hours, satisfy equation (B) shown below:

Aac??0.76×(CTAB)+274  (A)

2.1?(ignition loss)?(heating loss)?3  (B)
wherein the mode Aac is 1 ?m or less and the CTAB is 50 to 250 m2/g,

compounds represented by the following formula (VI):
XmY3?mSi—(CH2)p—Sq—(CH2)p—SiXmY3?m  (VI)

wherein X is CnH2n+1O wherein n is an integer of 1 to 3 or a chlorine atom; Y is an alkyl group having 1 to 3 carbon atoms; m is an integer of
1 to 3; p is an integer of 1 to 9; q is an integer of 1 or more and may have distribution; provided that when m is 1, two
Y may be same or different and that when m is 2 or 3, two or three X may be same or different,

compounds represented by the following formula (VII)
XmY3?mSi—(CH2)r—W  (VII)

wherein X is CnH2n+1O wherein n is an integer of 1 to 3 or a chlorine atom; Y is an alkyl group having 1 to 3 carbon atoms; W is a mercapto group,
a vinyl group, an amino group, a glycidoxy group or an epoxy group; m is an integer of 1 to 3; r is an integer of 0 to 9;
provided that when m is 1, two Y may be same or different and that when m is 2 or 3, two or three X may be same or different,
and

compounds represented by the following formula (VIII)
XmY3?mSi—(CH2)p—Sq—Z  (VIII)

wherein X is CnH2n+1O wherein n is an integer of 1 to 3 or a chlorine atom; Y is an alkyl group having 1 to 3 carbon atoms; Z is a benzothiazolyl
group, an N,N-dimethylthiocarbamoyl group or a methacryloyl group; m is an integer of 1 to 3; p is an integer of 1 to 9; q
is an integer of 1 or more and may have distribution; provided that when m is 1, two Y may be same or different and that when
m is 2 or 3, two or three X may be same or different.

US Pat. No. 9,249,244

PROCESS FOR PRODUCING POLYDIENES

Bridgestone Corporation, ...

1. A method for producing a polydiene, the method comprising the steps of:
(i) preparing an active preformed catalyst by introducing a lanthanide-containing compound, an alkylating agent, a halogen
source, and optionally monomer;

(ii) independent of step (i), introducing the preformed catalyst to conjugated diene monomer that is to be polymerized;
(iii) independent of step (i), introducing an amine to the conjugated diene monomer that is to be polymerized, where the ratio
of the amine to the lanthanide-containing compound is at least 20:1; and

(iv) polymerizing the conjugated diene monomer that is to be polymerized with the preformed catalyst in the presence of the
amine to produce a polymer having a reactive end, where the amine and the preformed catalyst are introduced separately and
individually to the conjugated diene monomer that is to be polymerized.

US Pat. No. 9,068,064

FLUORINE RUBBER COMPOSITION AND BLADDER FOR TIRE PRODUCTION

BRIDGESTONE CORPORATION, ...

1. A fluorine rubber composition comprising a rubber component comprising:
a fluorine rubber;
carbon black; and
a vulcanization system compounding agent containing a co-crosslinking agent,
wherein the carbon black has a specific surface area by nitrogen adsorption (N2SA) of 25 m2/g or more and not more than 180 m2/g and a dibutyl phthalate (DBP) absorption amount of 60 mL/100 g or more and not more than 180 mL/100 g;

the fluorine rubber is at least one member selected among (A) a copolymer of tetrafluoroethylene/perfluoroalkyl vinyl ether,
(B) a copolymer of tetrafluoroethylene/propylene, and (C) a copolymer made of (i) at least one monomer selected among tetrafluoroethylene,
hexafluoropropene, pentafluoropropene, trifluoroethylene, chlorotrifluoroethylene, vinyl fluoride, perfluoroalkyl vinyl ether
and propylene, and (ii) vinylidene fluoride; and

in a kneading step of compounding the carbon black in the rubber component, an average shear rate of a rotor tip point of
a kneading machine is 100 (1/sec) or more, and a kneading maximum temperature Tm is 120° C. or higher and not higher than 200° C.,

wherein the elongation at break at 25° C. of the fluorine rubber composition after vulcanization is 400% or more and not more
than 800%, and

wherein a compounding amount of the co-crosslinking agent is 0.1 to 2.5 parts by mass based on 100 parts by mass of the rubber
component.

US Pat. No. 9,315,599

FUNCTIONALIZED POLYMERS

Bridgestone Corporation, ...

1. A method for preparing a functionalized polymer, the method comprising the steps of:
(i) polymerizing monomer with a lanthanide-based catalyst to form a reactive polymer, and
(ii) reacting the reactive polymer with an azodiester.

US Pat. No. 9,309,330

VINYL MODIFIER COMPOSITION AND PROCESSES FOR UTILIZING SUCH COMPOSITION

Bridgestone Corporation, ...

1. A polymerization process comprising the step of polymerizing at least one conjugated diene monomer in the presence of an
anionic initiator and a composition comprising at least one oxolanyl compound selected from the group consisting of:
wherein R1 and R2 independently are hydrogen or an alkyl group and the total number of carbon atoms in —CR1R2— ranges between one and nine inclusive; R3, R4 and R5 independently are —H or —CnH2n+1 wherein n=1 to 6,
wherein at least 60% by weight of the least one oxolanyl compound comprises meso-isomer and
the process produces a polydiene polymer having a vinyl microstructure content of at least about 20%.

US Pat. No. 9,811,809

BELT MANAGEMENT SYSTEM AND METHOD

BRIDGESTONE CORPORATION, ...

1. A belt management system that is formed by a management server that manages belts that are used in a belt conveyor, a terminal
that is provided in a location where the belt conveyor is installed, and a data server that is provided in a company that
manufactures and sells belts, wherein
the management server is provided with:
a transceiver unit that receives in time series belt remaining thickness data that shows the thickness of the belt and that
is supplied from the terminal at each one of predetermined periods;

a belt lifespan prediction unit that, by writing the belt remaining thickness data in the management database in time series,
and reading from the management database the belt remaining thickness data that has been stored in time series, and dividing
the difference between the predetermined periods by the usage amount of the belt at each of the predetermined periods, and
determining a unit amount of change in the usage amount units, and subtracting from the most recent belt remaining thickness
data a management threshold value which shows the thickness of the belt, and dividing the result of this subtraction by the
unit amount of change, determines a remaining lifespan that shows the future amount of use until the belt needs to be replaced;

an expenditure database in which a total cost of ownership is written and stored, in belt conveyor units, for each different
type of belt, the total cost of ownership including at least belt price, maintenance costs, and electricity cost; and

a total cost of ownership calculating unit that determines a total cost in usage amount units by dividing a sum total of the
belt price, the maintenance costs, and the electricity cost that has been stored in the expenditure database by the usage
amount, and associating the total cost in usage amount units with the corresponding belt of the belt conveyor and writing
and storing the results in the expenditure database,

wherein a measuring device that measures the belt remaining thickness data is provided in the belt conveyer,
wherein the belt remaining thickness data is either data that has been measured and input into the terminal, or data that
is measured by the measuring device and is collected from the measurement device by the terminal.

US Pat. No. 9,458,270

METHOD FOR PRODUCING POLYDIENES AND POLYDIENE COPOLYMERS WITH REDUCED COLD FLOW

Bridgestone Corporation, ...

1. A method for preparing a coupled polymer, the method comprising the steps of:
(i) polymerizing monomers to form a reactive polymer, where the monomer includes conjugated diene monomer, where said step
of polymerizing employs a coordination catalyst, and where said reactive polymer has a reactive chain end, and

(ii) reacting the reactive polymer with a glycidic ester.

US Pat. No. 9,689,457

TORQUE ROD AND ENGINE MOUNTING SYSTEM FOR USING SAME

BRIDGESTONE CORPORATION, ...

1. A torque rod comprising two elastic bushes to be mounted respectively to a vibration-generating side and a vibration-receiving
side, and a connecting rod connecting the two elastic bushes,
wherein an actively controlled vibration cancellation means configured to relatively displace a mass member from an originally
arranged position toward the two elastic bushes around a shaft extending toward the two elastic bushes is provided in the
connecting rod, and

the actively controlled vibration cancellation means comprises an actuator including: the shaft having two opposite ends,
each end of the shaft being mounted to the connecting rod and extending in an axial direction of the connecting rod; the mass
member shaped in a tube to surround the shaft and reciprocatively displaced to generate a vibration in a phase opposite of
that of the input vibration from the vibration-generating side in the axial direction of the torque rod due to the active
control; a coil and a winding core fixed to the shaft in the tube-shaped mass member; at least one permanent magnet mounted
to an inner peripheral surface of the tube-shaped mass member or the shaft; and a connecting member for connecting at least
one end of the tube-shaped mass member to the shaft.

US Pat. No. 9,352,616

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire comprising
a pair of bead portions,
a carcass extending toroidally between the bead portions, and a plurality of reinforcing layers and a tread disposed in order
radially outside a crown portion of the carcass,

wherein as a result of the tire being mounted on a standard rim with 5% of standard internal pressure applied, at least one
half, in a tire width direction, of an outermost reinforcing layer located outermost in a tire radial direction among the
plurality of reinforcing layers includes a curved portion, curved convexly outward in the tire radial direction, and extends
inward in the tire radial direction from a top of the curved portion to an edge of the outermost reinforcing layer,

a number of the plurality of reinforcing layers is three,
the curved portion is only included in the outermost reinforcing layer,
wherein along the tire width direction, an interval in the tire radial direction between the outermost reinforcing layer and
an outer contour of the tread gradually decreases from a tire equatorial plane to the top of the curved portion and gradually
increases from the top of the curved portion to an outermost belt edge,

and wherein the outermost reinforcing layer is a belt reinforcing layer which is formed from cords extending in the tire circumferential
direction and covered in rubber.

US Pat. No. 9,255,158

AMINOSILANE INITIATORS, FUNCTIONALIZED POLYMERS PREPARED THEREFROM AND RELATED PROCESSES

Bridgestone Corporation, ...

1. A process for producing an aminosilane-functionalized polymer comprising the steps of:
(a) providing an initiator formed by mixing at least one type of anionically polymerizable monomer with at least one alkenylaminosilane
compound having the formula


where n is a whole number selected from the group consisting of 0-2, and m is a whole number selected from the group consisting
of 1-3, with the proviso that the sum of m and n equals 3; where each R is independently a hydrogen, alkyl or aryl group;
where each R1 is independently a hydrocarbyl group; where each R2 is independently a hydrocarbyl group having between 2 and 12 carbon atoms; where each R3 is independently a hydrocarbylene group having between 2 and 12 carbon atoms; and where one or more R2 may form a bridge between two nitrogen atoms when m is greater than 1; and thereafter

(b) adding at least one metallating agent to the mixture, thereby metallating the alkenylaminosilane and initiating polymerization
of the at least one type of anionically polymerizable monomer thereby producing a living polymer that includes at least one
aminosilane group having a formula as follows at the head of the polymer only


wherein R, R1, R2, m and n are as above and Z has 1-20 carbon atoms and is selected from the group consisting of alkyls, cycloalkyls, alkenyls,
alkynyls, aryls, and aralkyls, and

(c) either terminating the living polymer with a proton from a quenching agent or functionalizing the living polymer with
a functional terminator selected from the group consisting of carbon dioxide, benzophenones, benzaldehydes, imidazolidones,
pyrrolidinones, carbodiimides, ureas, isocyanates, Schiff bases, trialkyltin halides, cyclic amino compounds, N-substituted
aminoketones, N-substituted thioaminoketones, N-substituted aminoaldehydes, N-substituted thioaminoaldehydes, sulfur-containing
or oxygen containing azaheterocycles, boron-containing terminators, cyclic siloxanes, ?-halo-?-amino alkanes, and combinations
thereof followed by terminating the living polymer with a proton from a quenching agent.

US Pat. No. 9,541,483

CONTACT STATE OBSERVATION APPARATUS OF GOLF BALL AND CONTACT STATE OBSERVATION METHOD OF GOLF BALL

BRIDGESTONE CORPORATION, ...

1. A contact state observation apparatus of golf ball comprising:
launching means for launching a golf ball;
an impact plate with which the launched golf ball impacts; and
imaging means, provided ahead of a launching direction of the golf ball and opposite to the launching means across the impact
plate, and facing the opposite direction of the launching direction of the golf ball, for shooting an image of a contact state
between the golf ball and the impact plate at the time of impact of the golf ball,

wherein the impact plate has, in a part where the golf ball impacts, an observation hole whose area in a surface facing the
launching means is smaller than a contact area with the impacting golf ball, and

the imaging means shoots the image of the contact state of the golf ball through the observation hole to observe the contact
phenomenon of the golf ball.

US Pat. No. 9,567,455

RUBBER COMPOSITION, METHOD FOR MANUFACTURING SAME, VULCANIZED RUBBER, AND TIRE

BRIDGESTONE CORPORATION, ...

1. A method for manufacturing a rubber composition comprising a rubber component and short fibers, wherein the short fibers
are cationized, the method comprising:
a mixing step for mixing the cationized short fibers and rubber latex to prepare a rubber-short fiber mixed solution; and
a drying step for drying the rubber-short fiber mixed solution to give a rubber composition, and
wherein the short fibers are fine cellulose fibers.

US Pat. No. 9,174,405

TREAD STRIP CURING STATION

BRIDGESTONE CORPORATION, ...

1. A curing station for curing a tread strip, comprising:
a flat curing mold;
a gripper which grips a portion of the cured tread strip inside the curing mold;
an actuating device which, at the end of the curing process, moves the gripper to gradually extract the cured tread strip
from the curing mold; and

a guide device which, as the cured tread strip is extracted, is positioned over the curing mold, and comprises a main roller,
about which the extracted part of the cured tread strip winds;

the curing station being characterized in that the guide device comprises a secondary roller smaller in diameter than, and
positioned parallel to and alongside, the main roller.

US Pat. No. 9,527,348

LOW-WEAR TYRE TREAD BAND

BRIDGESTONE CORPORATION, ...

1. A tread band for a tyre;
the tyre comprises a toroidal body ply which has two beads and supports the tread band and two sidewalls each arranged between
the tread band and a respective bead;

the tread band extends between two opposite lateral ends located at borders between the tread band and the sidewalls;
the tread band comprises a centre extending between two first junctions; two shoulders, which are located on either side of
the centre and each of which extends between a respective first junction and a second junction; and two edges, which are located
on either side of the shoulders, belong to the tread band, form a transition with the sidewalls, and each of which extends
between a respective second junction and a lateral end;

the profile of the tread band comprises at least a first arc forming part of the centre of the tread band and having a first
radius; two second arcs forming part of the shoulders of the tread band and having a second radius smaller than the first
radius; and two third arcs forming part of the edges of the tread band and having a third radius smaller than the second radius;

the profile of the tread band also comprises a fourth arc, which has a fourth radius greater than the first radius of the
first arc, forms part of the centre of the tread band, is located centrally between two first arcs, and extends between two
third junctions;

at each first junction, each second arc is connected discontinuously to the first arc by a step, wherein the second arc is
not tangent to, and is radially lower than, the first arc;

at each second junction, each third arc is tangent, and connected continuously, to the second arc;
at each third junction, each first arc is tangent and connected continuously to the fourth arc; and
the radial distance between the extension of the first arc and the second arc increases gradually from the centre to the shoulders,
so that the radial distance, measured at the first junction, between the extension of the first arc and the second arc is
less than the radial distance, measured at the second junctions, between the extension of the first arc and the second arc.

US Pat. No. 9,428,012

TIRE

BRIDGESTONE CORPORATION, ...

1. A tire comprising:
a plurality of blocks provided to a tread;
two open sipes are formed in a tire circumferential direction central portion of each of the blocks, segmenting each of the
blocks into a small block portion configured between the two open sipes, the small block portion having no sipe, and large
block portions configured at the two tire circumferential direction outsides of the small block portion, the large block portions
being longer in tire circumferential direction length than the small block portion, the large block portions not separated
by an open sipe in the circumferential direction; and

a closed sipe disposed in each of the large block portions, each closed sipe extending along an outer surface of the large
block portion in the tire width direction and ending within the block, with the closed sipes formed to extend radially inward
with a depth that is deeper than the open sipes,

wherein a length of the closed sipe extending in the tire width direction is greater than a length of the closed sipe extending
in the tire circumferential direction, and

wherein a depth dimension of the closed sipes is set to be greaLer than 120% and less than or equal to 140% of a depth dimension
of the open sipes.

US Pat. No. 9,687,797

KNEADING DEVICE

BRIDGESTONE CORPORATION, ...

1. A kneading device comprising:
a kneading chamber configured for accommodating materials to be kneaded; and
a pair of rotors configured for being rotated in the kneading chamber and kneading the materials to be kneaded by a plurality
of kneading blades, wherein

when each rotor is developed into a planar state, the plurality of kneading blades in each rotor is composed only of inclined
blades inclined to the same direction in a rotational direction of the rotor with respect to a rotor rotation axis and wherein,
in each rotor:

the rotor has a long bent blade and a short bent blade, as part of the inclined blades, which are bent at respective bent
portions to change its respective tilt angle with respect to the rotor rotation axis in the plurality of kneading blades;

both end portions of the long bent blade are located on the end portions of the rotor;
an end portion of the short bent blade is formed at a position away from the end portions of the rotor; and
a passage portion through which the materials to be kneaded can pass is provided between the one end portion of the rotor
and the one end portion of the short bent blade.

US Pat. No. 9,168,666

DEVICE AND METHOD FOR RIPPING GUM OF CONVEYOR BELT

BRIDGESTONE CORPORATION, ...

3. A method for ripping gum of a conveyor belt using a device for ripping gum wherein the conveyor belt includes individual
steel cords embedded in the gum of the conveyor belt, the steel cords are separated from each other, and the gum is stripped
off around each of the steel cords after the separation, the method comprising:
separating individual steel cords embedded in the gum of the conveyor belt from each other by using a V-shaped cutting blade
of the device for ripping gum, the V-shaped cutting blade having an upper end, a lower end, and a cutting edge that extends
in a direction from one of the ends to the other of the ends, the cutting edge extending in a first plane, the cutting edge
intersecting a traveling path of the conveyor belt, and

thereafter, stripping the gum off around each of the separated steel cords by a cylindrical cutting blade of the device for
ripping gum,

the method further comprising
incising the conveyor belt in a second plane using a linear cutting blade of the device for ripping gum, a cutting edge of
the linear cutting blade extending in the second plane and the second plane being substantially perpendicular to the first
plane, the incising comprising incising the gum around each of the steel cords after the individual steel cords are separated
from each other by the V-shaped cutting blade and before the gum around each of the separated steel cords is stripped by the
cylindrical cutting blade,

wherein the V-shaped cutting blade, the cylindrical cutting blade, and the linear cutting blade are attached to a base of
the device for ripping gum.

US Pat. No. 9,115,257

METHOD FOR MANUFACTURING RUBBER COMPOSITION

BRIDGESTONE CORPORATION, ...

1. A method for producing a rubber composition containing a rubber component (A) of at least one selected from natural rubbers
and synthetic dienic rubbers, a filler containing an inorganic filler (B), a silane coupling agent (C) and at least one vulcanization
promoter (D) selected from thiurams, dithiocarbamate salts, thioureas and xanthate salts, wherein in a first stage of kneading,
the rubber component (A), all or a part of the inorganic filler (B) and all or a part of the silane coupling agent (C) are
kneaded and then the vulcanization promoter (D) is added and further kneaded.

US Pat. No. 9,376,508

POLYMERS AND USE THEREOF IN PREPARATION OF HIGH IMPACT POLYMERIC COMPOSITIONS

Bridgestone Corporation, ...

1. A terminally functionalized polymer comprising the reaction product of a living polymer and at least one component selected
from the group consisting of:
(a) an allyl glycidyl ether having the formula (I)
CH2?CHCH2OCH2—X
wherein X is an epoxy group as follows:
wherein R1, R2, and R3 are the same or different, and are selected from hydrogen, alkyl groups having from 1 to 30 carbon atoms or aryl groups having
from 1 to 30 carbon atoms;
(b) an allylhalosilane having the formula (II)
CH2?CHCH2Si(R1R2)—X
wherein R1 and R2 are the same or different, and are selected from alkyl groups having from 1 to 30 carbon atoms or aryl groups having from
1 to 30 carbon atoms, and X is a halide selected from a chloride, a bromide, and an iodide, and
(c) a combination of (a) and (b);
wherein the living polymer is a homopolymer of a diene monomer.
US Pat. No. 9,062,144

HAIRY POLYMERIC NANOPARTICLES WITH FIRST AND SECOND SHELL BLOCK POLYMER ARMS

Bridgestone Corporation, ...

12. A rubber composition comprising:
a rubber matrix;
at least one filler; and
nanoparticles comprising:
a core being at least partially crosslinked_and comprising one or more monomer residues derived from vinyl-substituted alkenyl
benzene monomers;

a plurality of first shell block polymer arms and a plurality of second shell block polymer arms, each arm being attached
to the core;

wherein monomer residues of the first shell block polymer arms are different than monomer residues of the second shell block
polymer arms;

wherein the plurality of first shell block polymer arms and the plurality of second shell block polymer arms are at least
partially phase separated;

wherein the first shell block polymer arm includes a heterocyclic aromatic compounds;
wherein the nanoparticle is synthesized by solution polymerization;
wherein the rubber matrix comprises a first polymer and a second polymer, wherein the first and second polymers are immiscible,
wherein the first shell block polymer arm is miscible in the first polymer and the second shell block polymer is miscible
in the second polymer.

US Pat. No. 10,053,553

RUBBER COMPOSITION, AND PNEUMATIC TIRE USING SAME

BRIDGESTONE CORPORATION, ...

1. A rubber composition prepared by mixing, per 100 parts by mass of a rubber component comprising at least 50% by mass of a diene-based rubber, from 20 to 150 parts by mass of a filler, and from 0.05 to 30 parts by mass of a compound A which has a guanidine structure represented by the following formula (I) and has a functional group reactive with the diene-based rubberwherein the compound A is at least one selected from the group consisting of N,N-di-(1H-benzimidazol-2-yl)-2,2?-disulfandiylethanamine, N,N?-di-(1H-benzimidazol-2-yl)-3,3?-disulfanediyldipropanamide, bis[3-(2-amino-1H-benzimidazol-1-yl)-3-oxopropyl]disulfane, bis[6-(2-amino-1H-benzimidazol-1-yl)-6-oxohexyl]disulfane, and a compound represented by the following formulae (XVIII) and (XX)

US Pat. No. 9,446,806

RUBBER CRAWLER

BRIDGESTONE CORPORATION, ...

1. A rubber crawler comprising:
an endless rubber body that is entrained about plural wheels;
plural rubber projections that are disposed on the rubber body and spaced apart from one another in a rubber body circumferential
direction, project toward an inner peripheral side of the rubber body, and come into contact with the wheels to limit movement
of the wheels in a rubber body width direction; and

a low-hardness rubber portion that configures part of an inner peripheral surface of the rubber body, is disposed between
mutually adjacent rubber projections, and is formed by a rubber having a lower hardness than the rubber projections, wherein
regions of the rubber body on rubber body width direction outer sides of the low-hardness rubber portion are formed by a rubber
having a lower hardness than the low-hardness rubber portion.

US Pat. No. 9,308,781

PNEUMATIC TIRE FOR TWO-WHEELED MOTOR VEHICLE

BRIDGESTONE CORPORATION, ...

9. A pneumatic motorcycle tire comprising:
at least a one-layered spiral belt comprising a rubber-coated cord wound in spiral form in the circumferential direction of
the tire on the perimeter side of a carcass in a toroidal shape between a pair of bead sections;

a tread having a curved profile in a cross-section taken along the length of the tread; and
a groove in said tread of which a groove end is located between a central position, between a tire equator and a tread end
in the width direction of a tread, and the tread end, on a surface of a tread section in an external side in the radial direction
of the tire from the spiral belt, the groove being inclined with respect to the tire equator,

wherein, in the groove, a groove wall which forms the groove end located between the central position, between the tire equator
and the tread end in the width direction of the tread, and the tread end, has a chamfered shape in a cross section in the
width direction, and

wherein the groove has a finite length, the groove end including a corner of the groove, and
wherein a depth H1 is a distance from the tread surface to a position B at which a planar surface of the chamfered shape is
connected to the groove wall in a groove depth direction, and

wherein a groove depth H2 is deeper than the depth H1,
wherein, in the groove, the groove wall located between the central position, between the tire equator and the tread end in
the width direction of the tread, and the tire equator, has no chamfered shape,

wherein the groove wall of the groove and an end wall form the corner of the groove end, the groove wall has a chamfered shaped
in a cross-section in the width direction of the groove, and the end wall has a chamfered shape in a cross-section in the
length direction of the groove.

US Pat. No. 9,765,206

RUBBER COMPOSITION FOR CONVEYOR BELTS, RUBBER FOR CONVEYOR BELT COVERS, AND CONVEYOR BELT

BRIDGESTONE CORPORATION, ...

1. A rubber composition for conveyor belts, which contains, relative to (A) 100 parts by mass of a rubber component therein
containing from 100 to 70 parts by mass of styrene-butadiene rubber and from 0 to 30 parts by mass of at least one selected
from butadiene rubber and natural rubber, (B) from 5 to 20 parts by mass of silica, (C) from 10 to 25 parts by mass of resin,
and (D) from 40 to 70 parts by mass of carbon black having a nitrogen adsorption specific surface area, which is measured
according to JIS K 6217-2:2001, of 100 m2/g or more, and wherein the styrene-butadiene rubber is a styrene-butadiene rubber mixture having a mean styrene content of
from 28 to 35% by mass, which contains one or more types of styrene-butadiene rubber having a styrene content of from 20 to
25% by mass and one or more types of styrene-butadiene rubber having a styrene content of from more than 25 to 50% by mass.

US Pat. No. 9,534,655

VIBRATION DAMPING DEVICE

BRIDGESTONE CORPORATION, ...

1. A vibration damping device, comprising:
a cylindrical first attachment member that is joined to one of a vibration generating unit and a vibration receiving unit,
and a second attachment member that is joined to the other; and

an elastic body that joins the attachment members,wherein the elastic body comprises: an annular first elastic body and an annular second elastic body that are spaced from
each other in an axial direction,
a liquid chamber in which liquid is enclosed is formed between the elastic bodies, and a plurality of elastic division walls
that divide the liquid chamber into a plurality of pressure receiving liquid chambers are arranged in a circumferentially
spaced manner, the pressure receiving liquid chambers being in communication with one another through a restriction passage,

the elastic division wall is joined to the first elastic body, and is also in abutment with the second elastic body,
the second attachment member is divided in the axial direction into: a first divided body to which an inner peripheral edge
portion of the first elastic body is joined; and a second divided body to which an inner peripheral edge portion of the second
elastic body is joined,

the inner peripheral edge portions of the elastic bodies are located side by side in the axial direction,
the first divided body is provided with restriction portions to which the inner peripheral edge portion of the first elastic
body is joined from radially outward, which are arranged so as to overlap a radially inner end of the elastic division walls
in the axial direction, and the radially inner end of the elastic division wall is sandwiched between the restriction portions
and an inner peripheral edge portion of the second elastic body,

the second divided body is provided with a main unit and an attachment unit, the main unit being spaced from the first divided
body in the axis line direction and forming an annular concave onion extending in a circumferential direction of the main
unit between the main unit and the first divided body, and the attachment unit protruding toward the first divided body from
the main unit and being connected to the first divided body, and

an inner peripheral edge portion of the first elastic body is fitted into the annular concave portion.

US Pat. No. 9,481,211

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire comprising, in at least a portion of a tread surface located between both tread ends:
one or more main grooves extending in a tire circumferential direction; and
a plurality of lateral grooves extending in a tire width direction between the main grooves and/or between the main groove
and the tread end,

the main grooves and the lateral grooves defining a block row formed by a plurality of blocks, at least one sipe being disposed
in each block,

each block having formed therein:
a first cutaway groove with one end opening into a lateral groove located on one side of the block in the tire circumferential
direction and the other end terminating within the block;

a second cutaway groove with one end opening into a lateral groove located on the other side of the block in the tire circumferential
direction and the other end terminating within the block;

a connecting narrow groove having a groove width narrower than that of the first cutaway groove and the second cutaway groove
and connecting the first cutaway groove and the second cutaway groove; and

a rigidity of the block increases from an opening side of the first cutaway groove towards a terminating side of the first
cutaway groove and increases from an opening side of the second cutaway groove towards a terminating side of the second cutaway
groove.

US Pat. No. 9,469,161

PNEUMATIC TIRE FOR HEAVY LOAD

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire for heavy load comprising:
a tread, at least two circumferential grooves extending continuously in a tread circumferential direction, a plurality of
transverse grooves opening to the circumferential grooves adjacent each other in a tread width direction, and a block defined
by the circumferential grooves and the transverse grooves on a surface of the tread, wherein:

the block is provided with at least three shallow grooves having an average groove depth shallower than a groove depth of
the circumferential grooves adjacent to the block,

the average groove depth is greater than 20% and less than 80% of the groove depth of the circumferential grooves adjacent
to the blocks,

the shallow grooves include a circumferential shallow groove and a width direction shallow groove, which open to other grooves
at both ends,

at least two of the shallow grooves open to at least one of the transverse grooves and the circumferential grooves adjacent
to the block at both ends, and

at least one of the shallow grooves opens to the at least two shallow grooves.
US Pat. No. 9,365,700

AMINO ALKOXY-MODIFIED SILSESQUIOXANE ADHESIVES FOR IMPROVED METAL ADHESION AND METAL ADHESION RETENTION TO CURED RUBBER

Bridgestone Corporation, ...

1. A method comprising:
coating a metal with an adhesive composition comprising an alkoxy-modified silsesquioxane (AMS) selected from the group consisting
of an amino AMS, an amino/mercaptan co-AMS, an amino/blocked mercaptan co-AMS, and a weak acid-neutralized solid or aqueous
solution thereof, wherein the AMS liberates about 0.05% to about 10% by weight alcohol based on the weight of the AMS when
the product is treated by substantially total acid hydrolysis, thereby forming a coated metal;

embedding the coated metal in a rubber composition; and
vulcanizing the rubber composition.

US Pat. No. 9,352,619

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire comprising two circumferential main grooves within a tread ground-contact width, and a group of polygonal
blocks between the two circumferential main grooves, in which the group of polygonal blocks is comprised of a plurality of
polygonal blocks arranged in at least two longitudinal rows in a tire circumferential direction and in a plurality of transverse
rows in a tire width direction, the polygonal blocks each having not less than five sides and being defined by narrow grooves,
wherein:
the polygonal blocks in the adjacent longitudinal rows are arranged so as to be staggered from each other in the tire circumferential
direction; and

the group of polygonal blocks having a widthwise center that is positioned within a fifty-percent-wide region of the tread
ground-contact width across a tire equatorial plane,

and including side block rows each comprised of a plurality of side blocks defined by the circumferential main grooves, widthwise
grooves and the narrow grooves and arranged in the tire circumferential direction, the side block rows being arranged on both
sides in the tire width direction across the group of polygonal blocks respectively,

the side blocks are formed so as to have a larger ground-contact area compared with the polygonal blocks,
the ground-contact areas of the side blocks arranged on both sides of the group of polygonal blocks have a different dimension
respectively,

the side blocks arranged in the outer side in the tire width direction within the blocks on both sides across the group of
polygonal blocks have a larger ground-contact area.

US Pat. No. 9,254,721

BASE TIRE AND TIRE BUILT ON BASE TIRE

BRIDGESTONE CORPORATION, ...

1. The base tire comprising:
a base rubber forming an outer periphery of the base tire to which a tread rubber is applied;
a pair of mini side rubbers, each provided at an axial edge of the base rubber; and
a pair of outer rubber layers, each provided axially outside of a corresponding one of the mini side rubbers, each outer rubber
layer overlapping an axially outer side of the corresponding mini side rubber,

wherein:
a cut resistance of the mini side rubbers is set greater than a cut resistance of the base rubber and a cut resistance of
the outer rubber layers, and

loss tangents (tan ?) of rubber materials consisting the base rubber, the mini side rubbers and the outer rubber layers are
set in a relationship of “base rubber?outer rubber layer?mini side rubber”.

US Pat. No. 9,079,457

PNEUMATIC RADIAL TIRE FOR HEAVY LOAD HAVING LUG GROOVES

BRIDGESTONE CORPORATION, ...

1. A pneumatic radial tire for heavy load, having a plurality of lug grooves provided in respective side regions of a tread
surface to extend in the tread width direction, open at respective side edges of the tread surface, and define land portions
therebetween, characterized in that:
in a cross section of each lug groove in the width direction thereof, only a groove wall on the step-in side of each land
portion is bent at at least one bent point in the depth direction of the corresponding lug groove such that a portion of the
groove wall, located on the inner side in the radial direction than the bent point, is tilted in a direction that narrows
a groove width, and an opening width W at the tread surface and a depth, of the lug groove, is in the range of 20 to 80 mm
and in the range of 40 to 120 mm, respectively,

wherein the bent point is positioned within the range of 30-70% of a groove depth of the lug groove measured from a surface
of the land portion;

a portion located on the outer side in the radial direction than the bent point is tilted at an angle “a” with respect to
a line normal to the surface of the land portion, which angle “a” falls in the range of 0-20°;

a portion located on the inner side in the radial direction than the bent point is tilted at an angle “c” with respect to
an imaginary line extended from the radially-outer-side portion, which angle “c” falls in a range of 5-15°;

a groove wall of the kick-out side of each land portion is tilted such that an angle “b” formed by the groove wall with respect
to a line normal to the surface of the land portion satisfies a relationship of a?5°
wherein a portion of the groove wall on the step-in side, located on the inner side in the radial direction than the bent
point and excluding a round groove bottom portion, is tilted at a constant angle “c” with respect to an imaginary line extended
from the radially-outer-side portion of the groove wall, which angle “c” falls in a range of 5-15°.

US Pat. No. 10,052,917

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic snow tire comprising:a block that is provided at a tread, and that is demarcated by mutually intersecting main grooves respectively extending around a tire circumferential direction and along a tire width direction;
a first step portion that extends along one side wall portion at one tire circumferential direction side of the block, and that has a height from a groove bottom of one main groove extending along the tire width direction, where the one side wall portion is present, which is lower than a tread face and higher than the groove bottom of the one main groove extending along the tire width direction; and
a second step portion that extends along another side wall portion at another tire circumferential direction side of the block, that has a height from a groove bottom of another main groove extending along the tire width direction, where the another side wall portion is present, which is lower than the tread face and higher than the groove bottom of the another main groove extending along the tire width direction, and that has a smaller width than the first step portion; wherein:
an acute angle portion is provided at a position on the second step portion side of the block where an acute angle of intersection is formed between the main grooves;
the width of the second step portion is such that one end positioned on the acute angle portion side is smaller than another end positioned on an opposite side from the acute angle portion side; and
the height of the second step portion from the groove bottom is higher at the one end than at the another end.

US Pat. No. 9,505,285

ANTI-VIBRATION DEVICE

BRIDGESTONE CORPORATION, ...

1. An anti-vibration device comprising:
an inner cylinder connected to one of a vibration generating portion and a vibration receiving portion;
an outer cylinder connected to the other one of the vibration generating portion and the vibration receiving portion;
an intermediate cylinder pressed in an inner periphery of the outer cylinder;
a main elastic body connecting the inner cylinder and the intermediate cylinder; and
a stopper elastic body independent of the main elastic body, the stopper elastic body being fixed to the intermediate cylinder
and facing, in a direction orthogonal to an axial direction of the inner cylinder, the inner cylinder with at least a cavity
in between, the cavity being formed through the main elastic body in the axial direction of the inner cylinder,

wherein the stopper elastic body has an axial stopper portion that protrudes beyond the intermediate cylinder and the outer
cylinder in the axial direction of the inner cylinder and

wherein the axial stopper portion is arranged only inside the intermediate cylinder in a radial direction of the inner cylinder.

US Pat. No. 9,333,808

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire comprising:
a polygonal block group is provided between two circumferential main grooves in a tread ground contact width, the polygonal
block group comprising a plurality of polygonal blocks with five or more sides which are demarcated by thin grooves and arranged
in at least two longitudinal rows and a plurality of lateral rows, the longitudinal rows being arranged so that the polygonal
blocks included in adjacent longitudinal rows differ in phase from each other in a tire circumferential direction;

side block rows are provided, one on each of the two sides in the tire width direction of the polygonal block group, the side
block rows comprising a plurality of side blocks which are demarcated by the circumferential main grooves, lateral grooves,
and the thin grooves and arranged in the tire circumferential direction; and

a length in the tire circumferential direction of a first side block included in a first side block row provided on one side
is larger than the length in the tire circumferential direction of a second side block included in a second side block row
provided on the other side,

wherein a side of the first side block and the second side block facing the circumferential main grooves has a linear shape,
and a side of the first side block and the second side block facing the polygonal blocks has a complementary shape corresponding
to the shape of the adjacent polygonal blocks,

wherein a center in the tire width direction of the polygonal block group is offset from a tire equatorial plane, and a distance
in the tire width direction between the first side block row and the tire equatorial plane is larger than the distance in
the tire width direction between the second side block row and the tire equatorial plane.

US Pat. No. 9,243,679

ANTI-VIBRATION DEVICE

BRIDGESTONE CORPORATION, ...

1. An anti-vibration device comprising:
a first mounting component that is cylindrically-shaped and joined to one of a vibration generating portion and a vibration
receiving portion;

a second mounting component that is joined to the other one of the vibration generating portion and the vibration receiving
portion;

a first elastic body that elastically joins the first mounting component and the second mounting component together;
a fluid chamber that is provided inside the first mounting component and inside which a fluid is sealed;
a first partitioning wall that divides the fluid chamber in an axial direction so as to define a main fluid chamber, a portion
of wall surfaces of the first elastic body forms the main fluid chamber, and a partition-less auxiliary fluid chamber;

a second partitioning wall that divides the main fluid chamber in a circumferential direction so as to define a plurality
of divided main fluid chambers; and

a plurality of restricting passages that enable the plurality of divided main fluid chambers and the auxiliary fluid chamber
to communicate with each other,

wherein at least a portion of the first partitioning wall is formed by a second elastic body that is elastically deformable,
the second partitioning wall is joined to both the second mounting component and the second elastic body, and

the second elastic body has differences in rigidity in a radial direction and divides the main fluid chamber from the auxiliary
fluid chamber,

wherein a central portion in a radial direction of the second elastic body is joined to the second partitioning wall, while
an outside circumferential edge portion of the second elastic body is joined to the first mounting component, and an intermediate
portion that is located between the central portion and the outside circumferential edge portion has the differences in rigidity
in a radial direction,

wherein the rigidity of the intermediate portion of the second elastic body gradually increases from a central portion side
towards an outside circumferential edge portion side, the rigidity being substantially constant along a circumferential direction
at each radial location, and

wherein an upper surface of the second elastic body forming the plurality of divided main fluid chambers and provided at the
outside circumferential edge portion is offset in the axial direction toward the auxiliary fluid chamber from a lower surface
opposite to the upper surface of the second elastic body forming the auxiliary fluid chamber and provided at the central portion
of the second elastic body.

US Pat. No. 9,211,764

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire, comprising:
a carcass formed of at least one ply that toroidally extends;
an intersecting belt which is provided on the outer circumference side of a crown portion of the carcass and formed of two
inclined belt layers having cords inclined and extending in a direction intersecting each other across a tire equatorial plane;
and

a circumferential belt layer which is provided on the outer side of the intersecting belt in the tire radial direction and
includes a spiral cord arranged as being spirally wound at an inclination angle of equal to or smaller than 5 degrees to the
tire equatorial plane,

wherein, of the two inclined belt layers forming the intersecting belt, the cords in a first inclined belt layer are inclined
at an inclination angle that falls within the range of 45 to 90 degrees measured from the acute-angle side relative to the
tire equatorial plane;

wherein, of the two inclined belt layers forming the intersecting belt, the cords in a second inclined belt layer are inclined
at an inclination angle that falls within the range of 15 to 30 degrees measured in a direction opposite to the inclination
angle of the cords in the first inclined belt layer, relative to the tire equatorial plane, and is smaller, in absolute value,
than the inclination angle of the cords in the first inclined belt layer,

wherein the spiral cord has a rupture elongation of 3% or more and 8% or less,
wherein the first inclined belt layer and the circumferential belt layer are adjacent to each other in the tire radial direction,
wherein the second inclined belt layer, the first inclined belt layer, and the circumferential belt layer are arranged in
order from inward to outward in the tire radial direction, and

wherein only one first inclined belt layer, one second inclined belt layer, and one circumferential belt layer are provided
as belt layers having cords on the outer circumference side of the crown portion of the carcass.

US Pat. No. 9,193,085

METHOD AND DEVICE FOR TRANSFER CUTTING STRIP-SHAPED RUBBER MEMBER

BRIDGESTONE CORPORATION, ...

1. A method for transfer cutting a strip-shaped rubber member, comprising the steps of:
transferring the strip-shaped rubber member onto a belt conveyor by a transfer unit moving the strip-shaped rubber member
in a longitudinal direction of the strip-shaped rubber member while holding a tip portion thereof, the strip-shaped rubber
member being at an inclination with respect to the belt conveyor, the belt conveyor including a belt running in a longitudinal
direction of the belt conveyor;

cutting off a sheet piece from the strip-shaped rubber member by a cutting unit cutting the strip-shaped rubber member on
the belt conveyor in the longitudinal direction of the belt conveyor at one width-direction side of the belt conveyor, yielding
a cut-off sheet piece; and

transporting, by the belt conveyor, the cut-off sheet piece in the longitudinal direction of the belt conveyor, wherein
at a time of transfer of the strip-shaped rubber member by the transfer unit, a support member is lifted by a lifting/lowering
unit to project from a conveying surface of the belt, the support member being provided at one width-direction side of the
belt and being projectable from the conveying surface of the belt, so that the strip-shaped rubber member is raised from the
conveying surface of the belt.

US Pat. No. 9,167,901

SEAT PAD AND METHOD FOR MANUFACTURING THE SAME

BRIDGESTONE CORPORATION, ...

1. A method for manufacturing a seat pad comprising the step of foam molding the seat pad by pouring a raw material into a
mold and by curing the raw material in the mold,
wherein the seat pad comprises:
a seat surface for seating configured to have at least a seat cover material thereon;
side support parts provided on both sides defining a lateral direction of the seat pad;
a groove structure for containing a part of the seat cover material, at least a part of the groove structure being formed
as a lateral groove which extends in the lateral direction on the seat surface, and

at least one concavity provided between the first end and the lateral groove, extending along the lateral groove, and being
separated from the lateral groove by a distance S1 of 20 mm to 80 mm,

wherein the mold is structured for molding the seat pad with the seat surface facing in a downward direction,
when pouring the raw material, a cavity bottom surface of the mold is inclined so that the first end of the seat surface is
positioned lower than the second end thereof,

the cavity bottom surface comprises:
a protrusion for forming the groove of the seat pad,
a laterally elongated protrusion for forming the lateral groove of the seat pad which consists of a part of the protrusion
extending in the lateral direction when the seat pad is viewed in a position for use, and

a convexity for forming the concavity of the seat pad, which is positioned between the first end and the laterally elongated
protrusion, and faces the laterally elongated protrusion, and

a distance S1? between the convexity and the laterally elongated protrusion is 20 mm to 80 mm,

wherein a rising is provided on the laterally elongated protrusion at a position in front of the convexity, and
the raw material is poured in a state when an engagement member is arranged on a top end of the rising.

US Pat. No. 9,334,921

VIBRATION DAMPING DEVICE

BRIDGESTONE CORPORATION, ...

1. A vibration damping device comprising:
a tubular first mounting member that is coupled to any one of a vibration generating portion and a vibration receiving portion;
a second mounting member that is coupled to the other of the vibration generating portion and the vibration receiving portion
and is inserted through the first mounting member; and

an elastic body that is coupled to both of the mounting members,
wherein a plurality of pressure-receiving liquid chambers, in which a liquid is enclosed and of which portions of wall surfaces
are constituted of the elastic body, are disposed within the first mounting member,

wherein the pressure-receiving liquid chambers have a pair of first pressure-receiving liquid chambers that communicate with
each other through a first limiting path and a second pressure-receiving liquid chamber that communicates with an auxiliary
liquid chamber, in which the liquid is enclosed, through a second limiting path,

wherein the pair of first pressure-receiving liquid chambers sandwich the second mounting member therebetween,
wherein the second pressure-receiving liquid chamber is arranged side by side with the second mounting member in an orthogonal
direction orthogonal to both an axial direction of the first mounting member and a sandwiching direction in which the pair
of first pressure-receiving liquid chambers sandwich the second mounting member,

wherein the second mounting member extends over the entire length of each of the pair of first pressure-receiving liquid chambers
and the second pressure-receiving liquid chamber in the axial direction, and

wherein the first limiting path does not contact the auxiliary liquid chamber.
US Pat. No. 9,309,372

RUBBER COMPOSITIONS INCLUDING A FUNCTIONALIZED WAX

Bridgestone Corporation, ...

1. A tire comprising a tire tread, the tire tread prepared from a rubber composition comprising:
(a) at least one conjugated diene-containing polymer or copolymer comprising at least one conjugated diene monomer and optionally
at least one vinyl-containing monomer;

(b) at least one filler in an amount of 30 to 100 phr wherein at least a majority of the filler is carbon black, silica, or
a combination thereof;

(c) a curative package; and
(d) from 0.2 to 10 phr of at least one halogenated hydrocarbon wax.
US Pat. No. 9,206,441

METHOD FOR PRODUCING CELL HAVING NUCLEIC ACID INTRODUCED THEREIN

NATIONAL CEREBRAL AND CAR...

1. A method for producing a cell having nucleic acid introduced therein, comprising the steps of:
producing a gene transfer composition by mixing a nucleic acid with an aqueous solution of a temperature sensitive composition
at a temperature less than 32° C., the temperature sensitive composition being formed by adding 2-amino-2-hydroxymethyl-1,3-propanediol
to a temperature-sensitive polymer material having 2-N,N-dimethylaminoethyl methacrylate as a main polymer component;

adhering the gene transfer composition to a culture vessel; and
culturing a cell suspension provided to the culture vessel at a temperature higher than 32° C. to give a cell comprising the
nucleic acid within it.

US Pat. No. 9,802,444

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire comprising a tread, the tread having, in a surface thereof,
lug grooves on one side extending from one axial edge toward an axial center of the tire in such a manner as to intersect
with a circumferential direction of the tire and lug grooves on the other side extending in a symmetrically opposite direction
from the axial center toward the other axial edge of the tire;

a central circumferential groove located at contact width center of the tire and extending circumferentially therearound;
a plurality of longitudinal grooves disposed axially outside of the central circumferential groove and within a contact patch
of the tire;

a plurality of land portions defined by the central circumferential groove, the longitudinal grooves, and the lug grooves
or by the longitudinal grooves and the lug grooves; and

a plurality of sipes disposed in the land portions,
wherein the width of each of the lug grooves in shoulder regions is greater than the width thereof in a central region, the
central region being a region enclosed by two straight parallel lines each passing through a center between contact width
center and contact edge of the tire and the shoulder regions being regions axially outside of the central region,

wherein the sum of groove area of the central circumferential groove and groove area of the longitudinal grooves is smaller
than the groove area of the lug grooves,

wherein the plurality of longitudinal grooves consist of inner longitudinal grooves each disposed axially outside of the central
circumferential groove and outer longitudinal grooves each disposed axially outside of the inner longitudinal groove, and

wherein a central sipe angle, which is an angle between an extension direction of sipes formed in central blocks and a circumferential
direction of the tire, is smaller than a shoulder sipe angle, which is an angle between an extension direction of sipes formed
in shoulder blocks and the circumferential direction of the tire, and an intermediate sipe angle, which is an angle between
an extension direction of sipes formed in intermediate blocks and the circumferential direction of the tire, is smaller than
the central sipe angle, the central blocks being blocks disposed in a central portion of the tire and defined by the central
circumferential groove, the inner longitudinal grooves, and the lug grooves, the shoulder blocks being blocks disposed in
the shoulder region of the tire and defined by the outer longitudinal grooves and the lug grooves, and the intermediate blocks
being blocks disposed between the central blocks and the shoulder blocks and defined by the inner longitudinal grooves, the
outer longitudinal grooves, and the lug grooves.

US Pat. No. 9,469,661

HYDROXYL GROUP-CONTAINING METHYLSTYRENE AND POLYMERS INCORPORATING SAME

Bridgestone Corporation, ...

1. A functionalized polymer comprising polyene mer and at least one unit having the general formula
where m is an integer of from 2 to 5 inclusive.

US Pat. No. 9,393,840

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire comprising a tread surface provided, on both sides of a pattern center, with a pair of circumferential
main grooves extending along a circumferential direction of the tire to define a center region located between the pair of
circumferential main grooves, and two side regions located in both sides of the center region,
wherein:
the center region is provided with center circumferential narrow grooves including a first circumferential narrow groove located
adjacent to the pattern center and extending along the circumferential direction of the tire; a pair of second circumferential
narrow grooves located between the first circumferential narrow groove and the respective circumferential main grooves and
extending along the circumferential direction; and a plurality of center rib-like land portions including first center rib-like
land portions defined by the first circumferential narrow groove and the respective second circumferential narrow grooves,
and second center rib-like land portions defined by the respective second circumferential narrow grooves and the respective
circumferential main grooves,

the center rib-like land portions located next to each other with the center circumferential narrow grooves being therebetween
are adapted to supportingly contact with each other when the pneumatic tire is in contact with the ground,

the second circumferential narrow groove has a width larger than that of the first circumferential narrow groove,
a width of the second center rib-like land portion is more than 105% and not more than 115% of a width of the first center
rib-like land portion,

the first circumferential narrow groove has a first zigzag shape with a first vertex angle and the second circumferential
narrow grooves has a second zigzag shape with a second vertex angle, the second vertex angle being larger than the first vertex
angle, the first zigzag shape being offset with the second zigzag shape along the tire circumferential direction,

each of the center rib-like land portions is further provided with a plurity of first widthwise grooves extending along a
widthwise direction of the tire to dividingly form an array of center block-like land portions, and the center block-like
land portions located next to each other with the first widthwise groove being therebetween are adapted to supportingly contact
with each other,

the center block-like land portions have hexagonal shapes, and
in each of the center block-like land portions, a width of a center block-like land portion continuously increases from edges
along the circumferential direction toward a center of the center block-like land portion.

US Pat. No. 9,333,805

PNEUMATIC RADIAL TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic radial tire comprising:
a carcass composed of at least one carcass layer extending toroidally between a left-and-right pair of bead cores;
a tread portion which is arranged on the outside in the tire radial direction of a crown region of the carcass to form a ground
contacting portion; and

a belt composed of at least two belt layers which is arranged between the tread portion and the crown region of the carcass
to form a reinforcing portion, wherein

a reinforcing material constituting the belt layer is a bundle formed by arranging two cords without twisting them; each of
the cords has a (1×2) structure consisting of two filaments, wherein the diameters of all filaments constituting the cord
are the same, and, the diameter of each of the filaments being a (mm), an expected value of increment in bundle interval between
adjacent bundles is a/4 (mm) or more greater than the interval between the adjacent bundles represented by using the circumcircle
of the cord.

US Pat. No. 9,062,017

VINYL MODIFIER COMPOSITION AND PROCESSES FOR UTILIZING SUCH COMPOSITION

Bridgestone Corporation, ...

1. A polymerization process comprising the step of polymerizing at least one conjugated diene monomer in the presence of an
organometallic initiator and a composition comprising at least one oxolanyl compound selected from the group consisting of:

wherein R1 and R2 independently are hydrogen or an alkyl group and the total number of carbon atoms in —CR1R2— ranges between one and nine inclusive; R3, R4 and R5 independently are —H or —CnH2n+1 wherein n=1 to 6,

wherein at least 60% by weight of the least one oxolanyl compound comprises meso-isomer and
the process produces a polydiene polymer having a 1,2-vinyl microstructure content of at least 50%.

US Pat. No. 9,517,659

HEAVY DUTY TIRE

BRIDGESTONE CORPORATION, ...

1. A heavy duty tire, comprising:
a carcass provided in a toroidal shape across a pair of bead portions;
a belt provided on the outer side in the tire radial direction of a crown portion of the carcass and constituted of a plurality
of belt layers each made of cords coated with belt coating rubber;

a circumferential belt and a slant belt constituting the belt, the circumferential belt including at least one circumferential
belt layer made of cords extending in the tire circumferential direction, the slant belt being provided on the outer side
in the tire radial direction of the circumferential belt and including at least one slanted belt layer made of cords extending
to be inclined with respect to the tire circumferential direction; and

a cushion rubber provided between the carcass and a belt layer having the largest width in the tire width direction among
the plurality of belt layers and in a region on the outer side in the tread width direction of the belt layers positioned
on the inner side in the tire radial direction than the belt layer having the largest width, characterized in that:

the cushion rubber has a belt adjacent portion and a main body portion, the belt adjacent portion being adjacent to end portions
on the outer side in the tire width direction of the belt layers positioned on the inner side in the tire radial direction
than the belt layer having the largest width, the main body portion being provided to be adjacent to the belt adjacent portion
and extend on the inner side in the tire radial direction along the carcass; and

provided that E1?, E2? and E3? represent storage modulus values of the belt adjacent portion of the cushion rubber, the main
body portion of the cushion rubber, and the belt coating rubber, respectively, E1?, E2? and E3? satisfy following relationship,

E2? wherein the storage modulus values are measured according to the standards of JIS K 6394 (testing methods of dynamic properties
for vulcanized rubber and thermoplastic rubber) under conditions of dynamic strain: 2% and the room temperature.

US Pat. No. 9,365,666

POLYMERIZATION CATALYST COMPOSITION, METHOD FOR PRODUCING SYNTHETIC POLYISOPRENE, AND SYNTHETIC POLYISOPRENE

BRIDGESTONE CORPORATION, ...

1. A polymerization catalyst composition containing:
a rare earth element compound (component (A)) represented by the following general formula (i):
M-(NQ1)(NQ2)(NQ3)  (i)
(provided that M is at least one selected from the group consisting of lanthanide, scandium, and yttrium; and NQ1, NQ2, and NQ3 are of amide group and may be either the same or different from one another and have M-N binding);
at least one (component (B)) selected from an ionic compound and a halogen compound;
a compound (component (C)) represented by the following general formula (X):
YR1aR2bR3c  (X)
(provided that Y is metal selected from the group consisting of Group 1, Group 2, Group 12, and Group 13 of the periodic table;
R1 and R2 are of a hydrocarbon group having 1 to 10 carbon atoms or a hydrogen atom; R3 is of the hydrocarbon group having 1 to 10 carbon atoms; R1, R2, and R3 may be the same or different from one another; when Y is metal selected from Group 1 of the periodic table, a is 1 and b and
c are 0; when Y is metal selected from Group 2 or Group 12 of the periodic table, a and b are 1 and c is 0; and when Y is
metal selected from Group 13 of the periodic table, a, b, and c are all 1); and
a coumpound serving as an anionic ligand (component (D)) being an anionic tridentate ligand precursor.
US Pat. No. 9,293,616

SOLAR CELL SEALING FILM AND SOLAR CELL USING THE SAME

BRIDGESTONE CORPORATION, ...

1. A solar cell sealing film comprising, a resin mixture of an ethylene-vinyl acetate copolymer and a polyethylene, and an
organic peroxide,
wherein a mass ratio (EVA:PE) of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) in the resin mixture
is 8:2 to 3:7,

wherein a content of the organic peroxide is 0.1 to 1.0 parts by mass based on 100 parts by mass of the resin mixture,
wherein a gel rate after crosslinking is 30 to 80% by mass, and
wherein the polyethylene is a low density polyethylene (LDPE) having density of 0.910 g/cm3 or more and less than 0.930 g/cm3, or a liner low density polyethylene (LLDPE) having a density of 910 g/cm3 to 0.940 g/cm3.

US Pat. No. 9,637,666

COMPOSITION, ADHESIVE AND LAYERED BODY

BRIDGESTONE CORPORATION, ...

1. A composition comprising:
a polythiol compound;
a compound having plural epoxy groups;
a radical generator; and
an amine-based catalyst,
wherein a ratio (Ep/SH (epoxy groups/thiol groups)) of a total molar number (Ep) of epoxy groups contained in the compound
having plural epoxy groups to a total molar number (SH) of thiol groups contained in the polythiol compound is 0.50 or higher
but lower than 2.00; and

wherein a ratio of a total molar number of the radical generator to a total molar number of thiol groups contained in the
polythiol compound (radical generator/thiol groups) in from 0.025 to 0.5.

US Pat. No. 9,487,047

OIL-EXTENDED NATURAL RUBBER AND METHOD FOR PRODUCING THE SAME AND RUBBER COMPOSITION AND TIRE USING THE SAME

BRIDGESTONE CORPORATION, ...

1. An oil-extended natural rubber formed by adding an emulsified extension oil to a natural rubber latex, coagulating a mixture
of the natural rubber latex and the emulsified extension oil, and drying only a resulting coagulum,
wherein a weight average molecular weight as converted to polystyrene of a dry rubber component is not less than 1,500,000,
and

wherein an aniline point of the extension oil is 85-100° C.

US Pat. No. 9,447,213

POLYMERS FUNCTIONALIZED WITH POLYCYANO COMPOUNDS

Bridgestone Corporation, ...

1. A functionalized polymer defined by at least one of the formulae:

where ? is a polymer chain and R1 is a divalent organic group.

US Pat. No. 9,327,465

RETREADED TIRE MANUFACTURING METHOD AND TIRES SUITED THEREFOR

BRIDGESTONE CORPORATION, ...

1. A retreaded tire manufacturing method, the tire comprising a belt layer formed of a plurality of belts and a belt reinforcement
member disposed radially outside and spaced apart from the belt layer; comprising steps of:
forming a tread application surface, to which new tread rubber is applied, by abrading away tread rubber of the tire circumferentially,
wherein, at a first time of retreading, a position where the tread application surface is formed is located radially outside
of the belt reinforcement member,

wherein, at a second time of retreading, a position where the tread application surface is formed is formed within a range
of the tread rubber layer radially inside of the belt reinforcement member and radially outside of the belt layer,

wherein, at a third time of retreading, by abrading away the tread rubber until the belt located in a radially outermost position
of the belt layer is exposed, a position where the tread application surface is formed is formed on a surface of the exposed
belt;

applying a tread rubber including a belt reinforcement member corresponding with the buffed tread rubber on the application
surface formed at the second and the third time of retreading.

US Pat. No. 9,174,491

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire for heavy loads having: a toroidal carcass extending from a pair of bead cores through side portions to
a tread portion; a belt located on the outer side of the carcass in the tire radial direction; a tread rubber located on the
outer side of the belt in the tire radial direction; and, a groove on a road contact surface of the tread rubber, wherein
the tread rubber is formed by a base rubber layer located on the inner side of the tread rubber in the radial direction and
a cap rubber layer located on the outer circumferential surface of the base rubber layer;

the base rubber layer is formed with a rubber composition generating smaller heat as compared with the cap rubber layer;
the cap rubber layer is formed with a rubber composition having excellent wear resistance as compared with the base rubber
layer;

distribution of volume of the base rubber layer in the tread width direction is formed so as to be equal to distribution of
wear effective rubber volume of the tread rubber in the tread width direction, the wear effective rubber volume being expressed
by the following expression;

wear effective rubber volume=(1?negative ratio per unit width in the tread width direction)×unit width of the tread rubber
in the tread width direction×groove depth×circumferential length;

when a tread half width of the tread rubber is divided into four or more areas in the tread width direction, the wear effective
rubber volume at the dividing positions decreases toward the outer side in the tread width direction, and the volume distribution
of the base rubber layer is equal to the distribution of the wear effective rubber volume when viewed at the dividing positions,
and

the wear effective rubber volume has a maximum volume in a tread center position, and the wear effective rubber volume decreases
continuously from the tread center position to the tread edge.

US Pat. No. 9,085,731

METHODS FOR PRODUCING LIGHT-EMITTING BODY CONTAINING SILICON FINE PARTICLES AND LIGHT-EMITTING SILICON FINE PARTICLES

BRIDGESTONE CORPORATION, ...

1. A method for producing a light-emitting body containing silicon particles that emit visible light, comprising:
a baking step of baking a mixture containing a silicon source and a carbon source in an inert atmosphere;
a cooling step of cooling a gas generated by baking the mixture to obtain a composite powder at a temperature below 1600°
C.; and

a removing step of removing a portion of the composite powder using an acid consisting of hydrofluoric acid, wherein
in the removing step, a portion of silicon monoxide and a portion of silicon dioxide are removed by only the acid consisting
of hydrofluoric acid from the composite powder containing silicon particles, silicon monoxide, and silicon dioxide, and wherein

the light-emitting body containing silicon particles has an average particle diameter of 1 ?m or less.

US Pat. No. 9,079,460

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire in which a circumferential groove extending in a tire circumferential direction is formed by land portions
constituting a tread surface coming into contact with a road surface, wherein
a flat groove portion and an in-groove land portion are formed in the circumferential groove, the flat groove portion being
a flat surface of a groove bottom of the circumferential groove, the in-groove land portion being raised toward the tread
surface side from the groove bottom of the circumferential groove,

a plurality of narrow grooves extending in a tread width direction are formed in the in-groove land portion,
cutout portions extending respectively from the plurality of narrow grooves in the tread width direction are formed in a corresponding
one of the land portions and ending inside the land portion, wherein a width of each of the cutout portions in the tire circumferential
direction is substantially equal to a width of each of the narrow grooves in the tire circumferential direction, and

a width of the circumferential groove in the tread width direction is 5 to 30% of a width of the tread surface in the tread
width direction, wherein a depth from a groove bottom of each of the narrow grooves to an upper surface of the in-groove land
portion is 50 to 100% of a height from the groove bottom of the circumferential groove to the upper surface of the in-groove
land portion.

US Pat. No. 9,387,725

TIRE, AND MANUFACTURING METHOD FOR SAME

BRIDGESTONE CORPORATION, ...

1. A tire comprising at least a circular tire frame formed of a thermoplastic resin material,
the tire including a reinforcing cord member and a tread provided on the circular tire frame in this order, the reinforcing
cord member forming a reinforcing cord layer on an outer circumference of the tire frame, the reinforcing cord member being
a coated reinforcing cord member, the coated reinforcing cord member being coated with a resin material that is physically
different from the thermoplastic resin material which forms the tire frame at a cord member, and the resin material for coating
being a resin material that does not include a vulcanized rubber, wherein the tread is formed of a rubber, and the cord member
does not directly come in contact with the rubber; and

the thermoplastic resin material including at least a polyester-based thermoplastic elastomer, wherein
the content ratio of the polyester-based thermoplastic elastomer in the thermoplastic resin material is from 50% by mass to
100% by mass,

the polyester-based thermoplastic elastomer is a copolymer having a hard segment including an aromatic polyester and a soft
segment including at least one selected from the group consisting of an aliphatic polyether and an aliphatic polyester,

the resin material for coating the reinforcing cord member is the same kind as the thermoplastic resin material that forms
the tire frame, and

the tire is physically different from a rim and the tire frame includes a bead portion.
US Pat. No. 9,371,434

ELASTOMERIC COMPOUNDS HAVING INCREASED COLD FLOW RESISTANCE AND METHODS PRODUCING THE SAME

Bridgestone Corporation, ...

1. An elastomeric composition having increased cold-flow resistance, comprising:
(a) from 10 to 100 phr of a functionalized rubbery polymer with at least one terminus functionalizing unit,
(b) at least 0.01 phr of a multivalent metal organic salt,
(c) from 0 to 90 phr of at least one additional rubbery polymer selected from the group consisting of natural rubber, polybutadiene,
polyisoprene, styrene-butadiene rubber, butyl rubber, neoprene, ethylene-propylene rubber, EPDM, nitrile rubber, silicone
rubber, fluoroelastomers, ethylene-acrylic rubber, ethylene-vinyl acetate rubber, epichlorohydrin rubber, chlorinated polyethylene
rubber, chlorosulfonated polyethylene rubber, hydrogenated nitrile rubber, tetrafluoroethylenepropylene rubber, and combinations
thereof,

where the functionalized rubbery polymer contains monomers selected from the group consisting of vinyl aromatic compounds,
conjugated diene compounds, and mixtures thereof; and

where the terminus functionalizing unit comprises an a aryl group having at least one aromatic ring, and the at least one
aromatic ring bears at least two directly-bonded —OR groups, where R is either hydrogen or a hydrolyzable protecting group,
with the proviso that at least 30% of the —OR groups are hydrolyzed.

US Pat. No. 9,315,656

VIBRATION ISOLATING RUBBER COMPOSITION AND VIBRATION ISOLATING RUBBER

BRIDGESTONE CORPORATION, ...

1. A vibration isolating rubber composition consisting of a diene rubber,
a carbon black and a silica as fillers, wherein the mixing ratio of the carbon black (a) and the silica (b) is (a)/(b) =80/20
to 20/80 (weight ratio),

a silane coupling agent blended in the composition in an amount of 1 to 10 wt % based on the amount of the silica, and
optional components,
wherein the amount of the carbon black is from 10 to 16 parts by weight per 100 parts by weight of the diene rubber,
wherein the carbon black has an iodine adsorption number in the range of 40 to 140 g/kg and a DBP oil absorption amount in
the range of 90 to 160 ml/100 g and is selected from the group consisting of SRF, GPF, FEF, FT and MT,

wherein the silica is a silica gel having a nitrogen adsorption specific surface area (BET method) in the range of 80 to 230
m2/g,

wherein natural rubber (NR) is singly used as the diene rubber, or natural rubber (NR) and butadiene rubber (BR) are used
together as the diene rubber within a blending ratio of NR/BR=70/30 to 100/0 (weight ratio), and

wherein the optional components are selected from the group consisting of vulcanizing agents, oils, vulcanization accelerators
and antioxidants.

US Pat. No. 9,052,257

METHOD OF TESTING RUBBER WEAR, AND METHOD, DEVICE AND PROGRAM OF CALCULATING RUBBER INDEX OF TIRE USING METHOD OF TESTING RUBBER WEAR

BRIDGESTONE CORPORATION, ...

1. A method for calculating a rubber index of a tire comprising
a tire frictional energy measurement step in which a tire frictional energy of the tire under plural tire input conditions
which are provided to the tire is measured by a frictional energy measurement device which performs measurement based on the
shearing force and the slippage of the tire contact patch,

a contact pressure measurement step in which a contact pressure at a site related to the evaluation of rubber wear of the
contact patch portion of the tire is measured,

a pressing load setting step in which setting is performed such that the contact pressure is applied to a sample as a pressing
load,

a setting step in which a sample frictional energy of the sample of the same material as that of the tire is determined under
sample input conditions set based on the tire frictional energy under each of the measured tire input conditions in a state
in which the pressing load is applied to the sample, and a measurement condition for measuring a sample wear amount of the
sample is set based on the tire frictional energy under each of the measured tire input conditions and the sample frictional
energy determined under each of the sample input conditions,

a sample wear amount measurement step in which the sample wear amount of the sample is measured by a wear amount measurement
device under the set measurement condition and

a rubber index calculation step in which the rubber index of the tire is calculated based on the measured sample frictional
energy and the sample wear amount.

US Pat. No. 9,493,645

TUBE FOR FLUID TRANSPORTATION

BRIDGESTONE CORPORATION, ...

1. A tube for transporting a fluid, comprising a composition comprising (A) a thermoplastic elastomer, (B) 1 to 50 parts by
mass of flat-shaped graphite based on 100 parts by mass of the thermoplastic elastomer, and (C) 0.1 to 50 parts by mass of
a polyolefin resin based on 100 parts by mass of the thermoplastic elastomer,
wherein the flat-shaped graphite has an average particle diameter of 1 to 100 ?m, and an aspect ratio thereof is 1?aspect
ratio?5,

wherein the thermoplastic elastomer of the component (A) is a polystyrene base thermoplastic elastomer in which a principal
chain of a soft segment comprises a saturated bond,

wherein the polystyrene base thermoplastic elastomer of the component (A) is at least one selected from the group consisting
of a styrene-isobutylene-styrene block copolymer (SIBS), a styrene-ethylene/butylene-styrene block copolymer (SEBS) and a
styrene-ethylene/propylene-styrene block copolymer (SEPS), and

wherein a sheet of said composition having a thickness of 0.5 mm has an air permeability of 120×10?5 cm3/m2·24 hr·Pa or less.

US Pat. No. 9,393,838

ADHESIVE COMPOSITION, ADHESION METHOD, AND PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A laminate body comprising (A) a resin film layer and (B) a rubber elastic body layer which are bonded together via (C)
a layer of a pressure-sensitive adhesive composition,
wherein the pressure-sensitive adhesive composition comprises, as a rubber component, at least two modified rubbers modified
with a polar functional group and having different modification rates with each other;

wherein 80 to 100% by mass of the rubber component is the modified rubbers;
wherein the modified rubber is a combination of at least two modified rubbers of (a) a modified rubber with the modification
rate of 5 to 30% by mol and (b) a modified rubber with the modification rate of 40 to 90% by mol; and

wherein the pressure-sensitive adhesive composition further comprises a vulcanization accelerator, and a use amount of the
vulcanization accelerator is in the range of 0.1 to 5.0 parts by mass, relative to 100 parts by mass of the rubber component.

US Pat. No. 9,387,729

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire, comprising:
land portions that are provided at a tread between a first circumferential main groove and a second circumferential main groove
and are segmented by the first circumferential main groove extending along a tire circumferential direction, by a circumferential
sipe, and by lateral main grooves that extend in a direction intersecting with the first circumferential main groove and that
open onto the first circumferential main groove and onto the circumferential sipe; and

raised bottom portions that are provided at the tread at end portions of the lateral main grooves where the lateral main grooves
open onto the first circumferential main groove, that are integrally provided continuously between a first of the land portions
and a second of the land portions that are adjacent to each other in the tire circumferential direction at each of the lateral
main grooves, and that are each formed with a top face forming a bottom surface of the lateral main groove and configured
by a sloping face that slopes in a tread depth direction as the top face extends away from the first land portion and the
second land portion, respectively;

wherein:
the circumferential sipe is the only circumferential sipe provided between the first circumferential main groove and the second
circumferential main groove;

the lateral main grooves extend at an angle to a tire width direction;
the first land portion is positioned on an acute angle side of an intersection angle at each of the bottom rising portions
between the first circumferential main groove and the lateral main groove;

the second land portion is positioned on an obtuse angle side of the intersection angle;
the sloping face of the first land portion intersects with the sloping face of the second land portion along the tire circumferential
direction as viewed from the lateral main groove extension direction;

the raised bottom portions overlap with each other along the tire width direction at side walls respectively extending out
from the first land portion and the second land portion;

at the raised bottom portions, the sloping face extending out from the second land portion extends between the first land
portion and the first circumferential main groove; and

a boundary between the first land portion and the second land portion is curved so as to be convex on the second land portion
side.

US Pat. No. 9,365,082

ATTACHMENT STRUCTURE

BRIDGESTONE CORPORATION, ...

1. An attachment structure that attaches a function component having a function of detecting a state of a tire to an inner
surface of the tire, comprising:
a pedestal formed of an elastic member, and including a pedestal lower surface bonded to the inner surface of the tire and
a pedestal upper surface arranged opposite to the pedestal lower surface, wherein

an adhesive length in a tire circumferential direction where the pedestal lower surface is bonded to the inner surface of
the tire is equal to or less than 45 mm, when the pedestal is bonded to the inner surface of the tire, wherein

M240 denotes a mass of the function component;

H240 denotes a height of center of gravity of the function component in a vertical direction relative to the inner surface of the
tire;

T210 denotes a thickness of the pedestal in the vertical direction;

R denotes a radius of the tire;
L210 denotes the adhesive length;

V denotes a target durability speed;
?max denotes a maximum shearing stress generated at an end of the pedestal lower surface;
A, B, and C denote coefficients;
D130 denotes a depth from the inner surface of the tire to a reinforcement layer arranged to the tire in the vertical direction;
and

L210 is equal to or more than a value that satisfies a relationship of ?max/(A×C)=(H240+T210+D130)×V2/R×M240×EXP(?B×L210).

US Pat. No. 9,365,660

ANIONIC POLYMERIZATION INITIATORS AND PROCESSES

Bridgestone Corporation, ...

1. A method of making a functionalized random interpolymer, said interpolymer comprising polyene and styrenic mer units, said
method comprising (a) in a reaction vessel that contains ingredients which comprise a non-polar solvent, a polar coordinator
compound, and unsaturated monomers that comprise one or more polyenes and a sufficient amount of one or more hydrocarbon styrenes
so as to provide about 20 to about 40% of the constituent mer units of said interpolymer, initiating polymerization of said
unsaturated monomers with an effective amount of an initiating compound having the general formula

where
M is an alkali metal atom,
R is a hydrocarbyl group,
each Gp independently is a protecting group, and

m is an integer of from 2 to 5 inclusive,
and (b) hydrolyzing each of said protecting groups by reaction with tetrabutylammonium fluoride, thereby providing said functionalized
random interpolymer.

US Pat. No. 9,346,907

METHOD FOR PRODUCING COPOLYMER

BRIDGESTONE CORPORATION, ...

1. A method for producing a copolymer characterized by comprising a step of polymerizing a conjugated diene compound and an
olefin in the presence of a polymerization catalyst composition comprising at least one complex selected from the group consisting
of a metallocene complex represented by the following general formula (II):

wherein M in the general formula (II) is a lanthanoid element, scandium or yttrium, and CpR in the general formula (II) is independently a non-substituted or substituted indenyl, and X? in the general formula (II)
is a hydrogen atom, a halogen atom, an alkoxide group, a thiolate group, an amide group, a silyl group or a hydrocarbon group
having a carbon number of 1-20, and L in the general formula (II) is a neutral Lewis base, and w in the general formula (II)
is an integer of 0-3,

and a half-metallocene cation complex represented by the following general formula (III):

wherein M in the general formula (III) is a lanthanoid element, scandium or yttrium, and CpR? in the general formula (III) is a non-substituted or substituted cyclopentadienyl, indenyl or fluorenyl, and X in the general
formula (III) is a hydrogen atom, a halogen atom, an alkoxide group, a thiolate group, an amide group, a silyl group or a
hydrocarbon group having a carbon number of 1-20, and L in the general formula (III) is a neutral Lewis base, and w in the
general formula (III) is an integer of 0-3, and [B]? in the general formula (III) is a non-coordinating anion, and

wherein the cis-1,4 bond content of the conjugated diene compound portion in the copolymer is not less than 85%,
wherein when the conjugated diene compound is polymerized with the olefin, a concentration of the conjugated diene compound
(mol/l) and a concentration of the olefin (mol/l) at the starting of the polymerization satisfy a relation of the following
equation:

concentration of olefin/concentration of conjugated diene compound ?1.3, and
wherein a content of the olefin in the copolymer is a range of 10-50 mol %.

US Pat. No. 9,163,135

RUBBER COMPOSITIONS WITH FILLER AND KETOXIME OR KETIXMO SILANE

Bridgestone Corporation, ...

1. A composition comprising:
an elastomer;
a ketoximo silane corresponding to:

wherein j and n are 1, 2, or 3, q and m are 0 or 1, t and z is 0 or 1 and both (n+m+z) and (j+q+t) are equal to 3; R1 is a C1 to C60 divalent organic groups and may optionally include O, N S, Si, and/or P heteroatoms R3, R4, R8 and R9 are independently a hydrogen, a C1 to C60 hydrocarbyl or alkoxy group, optionally including O, N, S, Si, and/or P heteroatoms; R5, R6, R10 and R11 are independently a hydrogen, or a C1 to C60 hydrocarbyl group, optionally including O, N, S, Si, and/or P heteroatoms, and may optionally together form a cyclic ring;

and
an inorganic filler;
wherein the elastomer is selected from the group consisting of: styrene/butadiene copolymer, polyisoprene, polybutadiene,
butadiene/isoprene copolymer, butadiene/isoprene/styrene terpolymers, isoprene/styrene copolymer, natural rubber, butyl rubber,
ethylene-propylene-diene rubber and combinations thereof.

US Pat. No. 9,150,671

METAL COMPLEX CATALYSTS AND POLYMERIZATION METHODS EMPLOYING SAME

Bridgestone Corporation, ...

1. An amidinate complex of the general formula

where
M represents a Group 3 metal or lanthanide metal atom;
L represents a neutral Lewis base;
z is an integer of from 0 to 3 inclusive;
each R2 independently is H, a substituted or unsubstituted hydrocarbyl group, the radical of a heterocyclic compound, or a heteroatom-containing
functionality;

R1 is a halogen atom or R2;

each R3 is a —N[SiH(R4)2]2 group where each R4 is C1-C10 alkyl group,

with the proviso that two R2 groups or R1 and one R2 group, together with the atoms to which each is bonded, optionally form a ring structure.

US Pat. No. 9,054,236

SOLAR CELL SEALING FILM AND SOLAR CELL USING THE SEALING FILM

BRIDGESTONE CORPORATION, ...

1. A solar cell sealing film, comprising:
ethylene-polar monomer copolymer,
an organic peroxide, and
a silane-coupling agent,
wherein the silane-coupling agent is represented by formula (I):

in which R1 represents alkyl group having 1 to 3 carbon atoms, three R1s are the same as or different from each other, and “n” is 4; and

the silane-coupling agent is contained in the range of 0.02 to 1.0 parts by weight based on 100 parts by weight of the ethylene-polar
monomer copolymer.

US Pat. No. 9,470,286

LIQUID-SEALED ANTI-VIBRATION DEVICE AND METHOD FOR MANUFACTURING THE SAME

BRIDGESTONE CORPORATION, ...

1. A liquid-sealed anti-vibration device comprising:
an inner tube;
an outer tube;
rubber bodies interconnecting the inner and outer tubes in a liquid-tight manner at two positions spaced in an axial direction;
a partition wall disposed between the rubber bodies to divide a space between the inner and outer tubes into two chambers
in the axial direction, the partition wall having an annular rigid member and an elastic member;

said two chambers each being filled with non-compressible liquid; and
a limiting passage provided in the partition wall to allow said two chambers to communicate with each other,
wherein
the annular rigid member protrudes from the inner tube toward the outer tube or from the outer tube toward the inner tube,
the elastic member connects the annular rigid member to either the outer tube or the inner tube that is on the opposite side
of the side where the annular rigid member is mounted,

the limiting passage is formed by at least one passage groove, the passage groove being formed on a surface of the annular
rigid member on a protruding side of the annular rigid member, and by a rigid tube member fixed to the elastic member so as
to close a radial opening of the passage groove in a liquid-tight manner, and

the rigid tube member for closing the radial opening of the passage groove of the limiting passage has one axial-end inward
flange or one axial-end outward flange engaging with one axial-end surface edge section of the annular rigid member.

US Pat. No. 9,403,333

AUTOMATIC ZIPPER DEVICE FOR SHEET MEMBER AND METHOD FOR PRODUCING SHEET PRODUCT

BRIDGESTONE CORPORATION, ...

1. An assembly of an automatic zipper device and a support arm for joining two joint end portions of a sheet member while
moving the joint end portions after the sheet member has been wound around a molding drum periphery, the assembly comprising:
a roller assembly configured to take in the sheet member into the device;
a pair of bevel gears that are configured to bite between teeth meshing with each other while being rotated and driven and
join the joint end portions of the sheet member taken into the device;

a clamping cylinder positioned forward of the axles of the pair of bevel gears in a traveling direction of the bevel gears
and having a piston rod rotatably connected to an upper end of a dogleg-shaped arm that is pivotally connected to a support
frame body supporting a press at a lower end of the support frame, and configured to clamp the sheet member passing through
the bevel gears at a predetermined position,

the support arm having an upper end swingably connected to a lateral movement device forward of the automatic zipper device
in a traveling direction of the automatic zipper device and a lower end swingably connected to the automatic zipper device,
and

wherein the sheet member includes a rubber member, the sheet member having magnet-attractive metallic cords embedded therein,
and

wherein the clamping cylinder, as the piston rod of the clamping cylinder is extended, lifts the support frame body together
with the press to press the sheet member against the bevel gears and a position stabilizing magnet on each of opposite sides
of the pair of bevel gears and coextensive with the bevel gears along a direction parallel to the traveling direction of the
bevel gears, and maintain the sheet member at the predetermined position.

US Pat. No. 9,365,699

METHOD FOR PRODUCING RUBBER COMPOSITION

BRIDGESTONE CORPORATION, ...

1. A process for producing a rubber composition containing at least one rubber component (A) selected from natural rubbers
and synthetic diene rubbers, a filler containing an inorganic filler (B), a silane coupling agent (C) and a vulcanization
accelerator (D), wherein:
the rubber composition is kneaded in multiple stages, the rubber component (A), all or a portion of the inorganic filler (B),
all or a portion of the silane coupling agent (C) and the vulcanization accelerator (D) are added and kneaded in the first
stage of kneading, and the specific energy for kneading in the first stage is from 0.05 to 1.50 kWh/kg, and wherein the specific
energy is obtained by dividing the power consumption by the motor in the kneading device in the first stage of kneading by
the total mass of the rubber composition therein, and

the blade rotation speed of the kneading device in the first stage is from 25 to 100 rpm.

US Pat. No. 9,249,857

ANTI-VIBRATION APPARATUS

BRIDGESTONE CORPORATION, ...

1. An anti-vibration apparatus comprising:
a cylindrical first mounting member connected to one of a vibration generating portion and a vibration receiving portion;
a second mounting member connected to the other of the vibration generating portion and the vibration receiving portion;
a first rubber elastic body for elastically connecting the first and the second mounting members to each other; and
a dividing member that divides an inner part of the first mounting member into a primary liquid chamber in which a liquid
is sealed by making the first rubber elastic body a part of a first partition wall and an inner volume thereof is changed
due to the deformation of the first rubber elastic body and a secondary liquid chamber in which a second partition wall is
formed in a deformable manner and the liquid is sealed; wherein

between an outer peripheral surface of the dividing member and an inner peripheral surface of the first mounting member, an
orifice passage for linking the primary liquid chamber with the secondary liquid chamber is formed and the liquid is sealed
in the primary liquid chamber and the secondary liquid chamber,

the liquid contains a first liquid and a second liquid that are mutually insoluble, the second liquid having a higher vapor
pressure and a lower weight percentage included in the liquid than those of the first liquid, and the liquid, includes 20
wt % or less of the second liquid such that the second liquid is dispersed into a plurality of places in the first liquid
in a state in which the second liquid is separated from the first liquid, when receiving a vibration.

US Pat. No. 9,162,425

SOLAR CONTROL GLASS AND SOLAR CONTROL DOUBLE GLASS

BRIDGESTONE CORPORATION, ...

1. A solar control double glass which comprises a solar control glass having a glass plate and a heat-ray reflection layer
comprising an electrically-conductive polymer provided thereon and another glass plate, the solar control glass and the another
glass being arranged at an interval such that the heat-ray reflection layer faces the another glass and the interval forming
a hollow layer, wherein the heat-ray reflection layer has a surface resistivity of not more than 10,000?/?,
wherein the electrically-conductive polymer is a polythiophene derivative comprising a recurring unit represented by the following
formula (I):


in which R1 and R2 independently represent a hydrogen atom or an alkyl group of 1 to 4 carbon atoms, or R1 and R2 combine with each other to form an alkylene group of 1 to 4 carbon atoms which may be arbitrarily substituted, and n is an
integer of 50 to 1,000,

wherein the heat-ray reflection layer has a thickness of 100 to 450 nm, and
wherein the heat-ray reflection layer is formed on the topmost surface of the solar control glass.
US Pat. No. 9,044,911

METHOD OF PRODUCING COLOURED TYRE PORTIONS

BRIDGESTONE CORPORATION, ...

1. A method of producing coloured tyre portions, said method comprising:
a step of forming an impermeable barrier layer; and
a step of depositing a dye or coloured layer on said barrier layer;
said method being characterized in that the step of forming the barrier layer comprises, in sequence, the operations of (a)
depositing an aqueous dispersion on the part of the tyre for colouring; (b) separating said aqueous dispersion into an aqueous
phase and a solid phase; and (c) removing said aqueous phase;

said aqueous dispersion comprising at least one cross-linkable polymer base and a surfactant according to the following molecular
formula (I) or molecular formula (II):

(R1CONR2CHR3COO?)n Xn+  (I)

wherein in molecular formula (I):
R1 is an aliphatic group C6-C23,

R2 is H or an aliphatic group C1-C8,

R3 is H or an aliphatic or aromatic group C1-C8,

X is a metallic cation, and
n is an integer of 1 to 3;
([R4R5R6NR8(NR7R9R10)n](n+1)+)y (n+1)Xy?  (II)

wherein in molecular formula (II):
X is an atom or anionic group,
R4, R5and R6, which are the same or different, are each CmH2m+1, where m is 1 to 3, or CH2CHCH2 or CHCHCH3,

R7, R9 and R10, which are the same or different, are each CH2CHCH2 or CHCHCH3,

n is 0 or 1,
y is 1, if n is 1; y is 1 or 2, if n is 0,
R8 is an aliphatic group C15-C22, when n is 0; and is an aliphatic group C8-C16, when n is 1, and

at least one of R4, R5, R6 and R8 comprises a double bond, when n is 0.

US Pat. No. 10,046,488

METHOD OF MANUFACTURING FOAM MOLDED PRODUCT, APPARATUS FOR MANUFACTURING FOAM MOLDED PRODUCT, AND FOAM MOLDED PRODUCT

BRIDGESTONE CORPORATION, ...

1. An apparatus for manufacturing a foam molded product formed by integrally adhering together a foam body formed by the foaming of a foaming raw material and an air-permeable component, the apparatus comprising a plurality of mold components including a top mold and a bottom mold that define a mold cavity therebetween, whereina cavity surface of the bottom mold is configured to receive the foaming raw material injected into the mold cavity,
an aperture cavity surface of the top mold having gas venting holes defined therein,
wherein the mold cavity is defined by the cavity surface of the bottom mold and an inner side of a peripheral edge portion of the aperture cavity surface, and includes:
a foaming start space to which the foam raw material is supplied, and
a foaming end space that is disposed between the top and bottom molds in an area other than the foaming start space and is defined by the peripheral edge portion of the aperture cavity surface and is continuous with the foaming start space, and that is filled by the foam raw material inside the foaming start space performing a foaming action so as to spread as far as the foaming end space, and
a concave gas escape groove formed in the peripheral edge portion of the aperture cavity surface,
wherein a depth of the concave gas escape groove is less than a thickness of the top mold so as not to penetrate through the top mold.
US Pat. No. 10,030,083

POLYMERS FUNCTIONALIZED WITH PROTECTED OXIME COMPOUNDS CONTAINING A CYANO GROUP

Bridgestone Corporation, ...

1. A method for preparing a functionalized polymer, the method comprising the steps of:(i) polymerizing monomer to form a reactive polymer, and
(ii) reacting the reactive polymer with a protected oxime compound containing a cyano group.
US Pat. No. 9,534,093

METHOD OF PRODUCING A RUBBER COMPOUND COMPRISING SILICA

BRIDGESTONE CORPORATION, ...

1. A method of producing a rubber compound comprising silica; said method comprising a step of dispersing the silica in a
polymer base, and a following step of mixing with curing agents a mixture obtained from dispersing the silica in the polymer
base; the method comprising the step of dispersing the silica in the polymer base comprises the following sequence of operations:
soaking said polymer base in a liquid silica precursor to form a swollen polymer;
adding said swollen polymer to an organic solvent, and continually stirring the swollen polymer solution;
adding water and a silica synthesizing catalyst to the swollen polymer solution;
precipitating a polymer gel matrix by adding a precipitating agent;
separating and washing the precipitated polymer gel matrix.

US Pat. No. 9,505,270

PNEUMATIC RADIAL TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic radial tire comprising:
a directional pattern specifying a rotation direction of the tire;
at least one lateral groove provided in a tread surface of the tire extending from a tread end to the inside, in the width
direction, of a widthwise midpoint P of a tread half having the tread end;

a circumferential groove extending on a tire equatorial plane in a tread circumferential direction; and
at least one transverse groove that extends outwardly from the circumferential groove in the tread width direction and remains
within the tread surface without crossing any other groove, wherein

a groove wall on only a kicking-out side of the at least one lateral groove has a single protruding portion,
the protruding portion protrudes toward a groove wall on a stepping side,
with reference to a point Q representing a midpoint in a tread width direction between the tread end and the widthwise midpoint
P, the protruding portion extends in the tread width direction from a position between the point P and the point Q to the
inside of the point P in the width direction, and

the lateral groove at least partially overlaps the transverse groove when projected in a tire circumferential direction.

US Pat. No. 9,499,010

PNEUMATIC RADIAL TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic radial tire, comprising:
a carcass of a toroidal shape engagedly held between at least one pair of bead cores;
at least one layer of belt reinforcing layer constituted of a reinforcing element extending in the tire circumferential direction,
and provided on the outer side of a crown region of the carcass and on the inner side of a tread rubber; and

a belt formed by at least two belt layers and provided on the outer side in the tire radial direction of the belt reinforcing
layer, belt cords of one belt layer and those of another belt layer being inclined opposite to each other with respect to
the tire equatorial plane,

wherein the width of a belt cord intersecting region defined by the at least two belt layers is set in the range of greater
than 80% and less than or equal to 90% of a tire width, the width of the belt reinforcing layer is set in the range of 60
to 85% of the tire width, and a belt radius ratio, which is a ratio of difference (R0?R1) between the radius (R0) of the belt at the tire equatorial plane and the radius (R1) of the belt at a belt side end position thereof measured from the tire axis in a state where the tire is inflated at the
standard inner pressure, with respect to a belt half width, is not larger than 0.06, and

wherein an outermost end, in the tire width direction, of a radially outermost belt layer is provided at a radial position
that is not above a radial position of the radially outermost belt layer at the tire equatorial plane.

US Pat. No. 9,447,208

RUBBER COMPOSITION FOR TIRE, VULCANIZED RUBBER COMPOSITION FOR TIRE, AND TIRES USING SAME

BRIDGESTONE CORPORATION, ...

1. A rubber composition for a tire comprising:
a rubber component; and
a hydrated silica having particles each provided with micropores with openings in the range of 1.2×105 nm to 6 nm formed at outer surface of the particle,

wherein the rubber component contains a modified polymer reactive to the hydrated silica, and
in measurement according to a mercury press-in method using a mercury porosimeter of the hydrated silica, provided that:
M1 (nm) represents diameter of the opening exhibiting the maximum value of mercury charge rate when pressure is increased
from 1 PSI to 32000 PSI;

M2 (nm) represents diameter of the opening exhibiting the maximum value of mercury discharge rate when pressure is decreased
from 32000 PSI to 1 PSI;

IB represents ink bottle-shaped micropore index;
IB=M2?M1  (X);

CTAB (m2/g) represents specific surface area by cetyltrimethylammonium bromide adsorption;

weight loss on ignition (mass %) represents weight loss when the hydrated silica is heated at 750° C. for 3 hours; and
weight loss on heating (mass %) represents weight loss when the hydrated silica is heated at 105° C. for 2 hours,
IB and CTAB satisfy following formula (I) and formula (II) and weight loss on ignition and weight loss on heating satisfy
formula (III),

IB??0.56×CTAB+110.4 (when CTAB?140)  (I)
IB??0.20×CTAB+60.0 (when CTAB>140)  (II)
(weight loss on ignition?weight loss on heating)?3.2 (mass %)  (III-1?).

US Pat. No. 9,310,712

TONER CONVEYING ROLLER, MOLD USED FOR MANUFACTURING ROLLER AND METHOD FOR MANUFACTURING ROLLER

BRIDGESTONE CORPORATION, ...

1. A toner-conveying roller having a shaft body and a urethane foam layer integrally formed around the shaft body, wherein:
recesses and protrusions are irregularly formed on a circumferential surface of the urethane foam layer in both circumferential
and axial directions of the roller, said recesses and protrusions forming a wavy surface, said urethane foam layer further
comprising cell opening portions, and said cell opening portions being larger than a toner size,

an arithmetic mean roughness Ra of the circumferential surface of the urethane foam layer in the circumferential direction
is in a range of 5 to 100 ?m,

a ten-point mean roughness Rzjis of the circumferential surface of the urethane foam layer in the circumferential direction
is in a range of 20 to 400 ?m,

an arithmetic mean roughness Ra of the circumferential surface of the urethane foam layer in the axial direction is in a range
of 5 to 100 ?m,

a ten-point mean roughness Rzjis of the circumferential surface of the urethane foam layer in the axial direction is in a
range of 20 to 400 ?m, and

a mean length of roughness curve element RSm of the circumferential surface of the urethane foam layer in the axial direction
is in a range of 100 ?m to 2000 ?m,

wherein the arithmetic mean roughness Ra of the circumferential surface of the urethane foam layer in the circumferential
direction is greater than the toner size, and

wherein the toner-conveying roller is configured to supply toner to the surface of a developing roller.

US Pat. No. 9,168,787

STEEL CORD FOR REINFORCING RUBBER ARTICLE, AND PNEUMATIC TIRE USING SAME

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire having: a pair of bead portions; a pair of sidewall portions each extending to the outside of both the
bead portions in the tire radial direction; and a tread portion extending between both the sidewall portions, and comprising;
a carcass composed of at least one carcass ply which toroidally extends between the pair of bead portions and reinforces each
of the portions; and a belt composed of at least one belt layer arranged on the outside of a crown portion of the carcass
in the tire radial direction, wherein
a steel cord for reinforcing rubber articles comprising a core formed by arranging two core filaments in parallel without
twisting the filaments together, and six sheath filaments twisted around the core, wherein, letting the diameter of the core
filament dc (mm), the diameter of the sheath filament ds (mm) and sheath filament twist pitch p (mm), an average sheath filament
interval D represented by the following Formula (I):

D=[L?6ds{1+(L/p)2}1/2]/6  (I),

(where L=(?+2)dc+?ds) is from 25 to 80 ?m is used as reinforcing members for at least one of the belt layer, and
wherein the belt has at least three belt layers; the steel cord constituting the outermost belt layer of the belt is the steel
cord for reinforcing rubber articles, and wherein

the belt has a cross belt layer laminated such that cords are crossed each other sandwiching the tire equatorial plane, and
the cord diameter of the steel cord constituting the cross belt is larger than the minor axis of the steel cord constituting
the outermost belt layer.

US Pat. No. 9,045,580

POLYURETHANE FOAM FOR SEAT PAD

BRIDGESTONE CORPORATION, ...

1. Polyurethane foam for a seat pad, comprising a foaming liquid containing (A) a polyol component, (B) a polyisocyanate component,
(C) water and (D) a catalyst, which has been foam-molded,
wherein the polyol component (A) contains from 40 to 55% by mass, based on the polyol component, of (a-1) a polyether polyol,
which is obtained through ring-opening polymerization of ethylene oxide and propylene oxide, having a molar ratio of repeating
units derived from ethylene oxide and propylene oxide of from 5/95 to 25/75 and a number average molecular weight of from
6,000 to 8,000, and containing from 5 to 15% by mass, based on the polyol component, of (a-2) a polyether polyol, which is
obtained through ring-opening polymerization of propylene oxide solely or ethylene oxide and propylene oxide, having a molar
ratio of repeating units derived from ethylene oxide and propylene oxide of from 0/100 to 5/95 and a number average molecular
weight of from 600 to 2,000,

wherein the number of hydroxyl groups contained in one molecule of each of components (a-1) and (a-2) is from 2 to 4, and
an amount of water (C) contained is 2.0 parts by mass or more per 100 parts by mass of the polyol component (A).

US Pat. No. 10,099,517

SIDE-REINFORCED RUN-FLAT TIRE

BRIDGESTONE CORPORATION, ...

1. A side-reinforced run-flat tire comprising a tread portion, a pair of sidewall portions extending on both sides of the tread portion, and reinforcing rubber provided in the sidewall portions, the side-reinforced run-flat tire further comprising:short fibers bonded, via an adhesive agent, to at least a portion of a region of a tire inner surface that is located in each of the sidewall portions, wherein
the adhesive agent has a softening temperature measured in accordance with JIS K6833 of from 50 to 100° C.

US Pat. No. 9,925,831

MULTILAYER STRUCTURE, INNER LINER FOR PNEUMATIC TIRE, AND PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A multilayer structure comprising barrier layers consisting of ethylene-vinyl alcohol copolymer and/or modified ethylene-vinyl alcohol copolymer with 50% or less elongation at break conforming to JIS K 7113 at 20° C. and 65% RH and elastomer layers made of polyurethane-based thermoplastic elastomer with 640% or more elongation at break conforming to JIS K 7113 at 20° C. and 65% RH, whereina difference between an input deformation amount of the multilayer structure at the time of 100% deformation input and a plastic deformation amount of the multilayer structure at the time of 100% deformation input is larger than a deformation amount at a tolerance point,
wherein an oxygen permeability coefficient of the barrier layers at 20° C. and 65% RH is 10.0 cc·mm/m2·day·atm or less,
wherein the barrier layers and the elastomer layers are laminated to form the multilayer structure having 7-3000 layers, and
wherein each of thickness of the barrier layers and the elastomer layers is within a range of 0.001-40 ?m.
US Pat. No. 9,499,647

POLYMER, RUBBER COMPOSITION CONTAINING POLYMER, CROSSLINKED RUBBER COMPOSITION OBTAINED BY CROSSLINKING RUBBER COMPOSITION, AND TIRE HAVING CROSSLINKED RUBBER COMPOSITION

BRIDGESTONE CORPORATION, ...

1. A polymer being a synthesized polyisoprene or an isoprene copolymer, the polymer having residual catalyst derived from
a catalyst used in polymerization in an amount of 300 ppm or less, and wherein a 3,4-vinyl bond content in an isoprene-derived
unit in the synthesized polyisoprene or the isoprene copolymer is 5% or less.
US Pat. No. 9,328,213

RUBBER COMPOSITION FOR PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A rubber composition containing, relative to 100 parts by mass of the rubber ingredient (A) therein, from 1 to 9 parts
by mass of carbon black (B) and from 80 to 150 parts by mass of a layered or platy clay mineral (C)
wherein the rubber ingredient (A) comprises 80 to 100% by mass of a butyl-based rubber and at most 20% by mass of a dienic
rubber.

US Pat. No. 9,163,104

PREPARATION OF FUNCTIONAL POLYMERS USING PHOSPHIDE INITIATORS

Bridgestone Corporation, ...

1. A method of preparing a polymer, the method comprising:
i. metalating an organophosphine compound in the substantial absence of monomer and in the presence of an oxygen-containing
polar coordinator to form a metalated organophosphine; and

ii. introducing the metalated organophosphine to monomer including conjugated diene monomer to form a reactive polymer.

US Pat. No. 9,933,038

ANTI-VIBRATION DEVICE

BRIDGESTONE CORPORATION, ...

1. An anti-vibration device comprising:an inner attachment member that is to be connected to one of a vibration generating portion and a vibration receiving portion;
an outer attachment member that surrounds the inner attachment member around an axis of the inner attachment member and is to be connected to the other one of the vibration generating portion and the vibration receiving portion;
an elastic body that is disposed between the inner attachment member and the outer attachment member and allows relative displacement between the inner attachment member and the outer attachment member by elastic deformation;
a pair of first pressure-absorbing fluid chambers, at least a portion of walls thereof being formed by the elastic body, that are in communication with each other via a first restricting passage and are filled with a fluid; and
a second pressure-absorbing fluid chamber, at least a portion of walls thereof being formed by the elastic body, that is in communication with a fluid-filled auxiliary fluid chamber via a second restricting passage and is filled with a fluid, wherein
the first pressure-absorbing fluid chambers are disposed at opposite sides of the inner attachment member,
the second pressure-absorbing fluid chamber is aligned with the inner attachment member in an orthogonal direction that is orthogonal to a direction along the axis of the inner attachment member and to a sandwiching direction in which the first pressure-absorbing fluid chambers are disposed so as to sandwich the inner attachment member,
the second pressure-absorbing fluid chamber is positioned between the axis of the inner attachment and the auxiliary fluid chamber in the orthogonal direction, and
a stopper part that restricts the relative displacement between the inner attachment member and the outer attachment member upon a load being input in the sandwiching direction is provided inside at least one of the pair of first pressure-absorbing fluid chambers.

US Pat. No. 9,469,658

LANTHANIDE COMPLEX CATALYST AND POLYMERIZATION METHOD EMPLOYING SAME

Bridgestone Corporation, ...

1. A catalyst composition comprising a catalyst activator and a lanthanide metal complex of the general formula
where
M represents a Nd or Gd atom;
L represents a neutral Lewis base;
z is an integer of from 0 to 2 inclusive, with the proviso that each L is the same when z is 2;
R1 is a divalent atom or group that contains at least one C,O,S,N,P,Si,Se,Sn or B;

each R2 independently is H, a halogen atom, substituted or unsubstituted hydrocarbyl group, the radical of a heterocyclic compound,
or a heteroatom-containing group; and

R3 is a halogen containing group, a group that contains an Al atom, or R2, with the proviso that (1) two R2 groups together with the atoms to which each is bonded can form a ring structure, (2) one R2 group and R1 R3 together with the atoms to which each is bonded can form a ring structure, and/or (3) R1 and R3 together with the atoms to which each is bonded can form a ring structure.

US Pat. No. 9,399,685

RUBBER COMPOUND MICROWAVE CURING METHOD

BRIDGESTONE CORPORATION, ...

1. A method of curing a compound comprising a cross-linkable, unsaturated-chain polymer base and a curing system; said method
being characterized by comprising a curing step wherein the compound is cured by using microwaves as a form of energy to promote
curing reactions; and in that said curing system comprises compounds of general formula (I)
([R1R2R3NR5(NR4R6R7)n](n+1)+)y(n+1)Xy?  (I)

where:
X is an atom or anionic group;
R1, R2, R3, which are the same or different, are each CmH2m+1, where m is 1 to 3, or CH2CHCH2 or CHCHCH3;

R4, R6, R7, which are the same or different, are each CH2CHCH2 or CHCHCH3;

n is 0 or 1;
y is 1 when n is 1; y is 1 or 2 when n is 0;
R5 is an aliphatic group C15-C22 when n is 0; is an aliphatic group C8-C16 when n is 1;

when n is 0, at least one of R1, R2, R3, R5 comprises a double bond.

US Pat. No. 9,394,647

ADHESIVE COMPOSITION FOR ORGANIC FIBER CORDS, RUBBER-REINFORCING MATERIAL USING SAME, TIRE AND BONDING METHOD

BRIDGESTONE CORPORATION, ...

1. A bonding method, wherein an adhesive layer is formed by covering an organic fiber cord for tire reinforcement formed by
twisting organic fibers with an adhesive composition for organic fiber cords which contains either a (blocked) isocyanate
compound or a (blocked) isocyanate compound and an amine-based curing agent (A), an epoxy compound (B) and rubber latex (C)
without resorcinol and formaldehyde, and the organic fiber cords and rubber are bonded via the adhesive composition for organic
fiber cords, wherein the ratio of the mass of the (blocked) isocyanate compound (A) a to the mass of the epoxy compound (B)
b, a/b, is not smaller than 0.1 and not larger than 30, and wherein the rubber latex (C) is constituted of vinylpyridine-styrene-butadiene
copolymer latex, which is constituted of vinylpyridine-styrene-butadiene copolymer latex having a double structure, which
can be obtained by (i) polymerizing a monomer mixture having a styrene content of 30 to 60% by mass, a butadiene content of
less than 60% by mass and a vinylpyridine content of 0.5 to 15% by mass, (ii) then, polymerizing a monomer mixture having
a styrene content of 10 to 40% by mass, a butadiene content of 45 to 75% by mass and a vinylpyridine content of 5 to 20% by
mass, at a lower styrene content than that used in the polymerization in the item (i).

US Pat. No. 9,211,765

WINTER TYRE WITH IMPROVED TRACTION ON SNOW SURFACES

BRIDGESTONE CORPORATION, ...

12. A winter tyre with improved traction on snow surfaces;
the tyre comprises a tread with a raised pattern defined by a number of longitudinal and transverse grooves which form at
least one longitudinal row of blocks projecting radially from a base surface of the tread;

wherein each block has two longitudinal lateral surfaces bounding two corresponding longitudinal grooves; and two transverse
lateral surfaces bounding two corresponding transverse grooves;

wherein at least one of the blocks has lateral channels, each formed on the lateral surface of a corresponding block and extending
from the base surface of the tread to a top surface of the block;

wherein at least one first lateral channel slopes with respect to a radial direction; and
wherein at least one first lateral channel has along its extension at least one constriction, which locally reduces the section
of the lateral channel and defines a discontinuity to impede radial spin-out of the snow trapped inside the lateral channel.

US Pat. No. 9,062,395

LINER FOR UNVULCANIZED RUBBER MEMBER

BRIDGESTONE CORPORATION, ...

1. An unvulcanized rubber member, comprising:
an unvulcanized rubber material; and
a liner contacting with the unvulcanized rubber material, the liner comprising a plurality of warp threads extending along
a length direction and a plurality of interwoven weft threads extending along a width direction, wherein the weft threads
are configured by a flat yarn;

the ratio of width to thickness (width/thickness) of the weft threads is 4.3 or greater; and
the weaving density of the weft threads is 35 strands/5 cm and the weaving density of the warp threads is 101 strands/5 cm.

US Pat. No. 9,051,455

HYDROXYL GROUP-CONTAINING METHYLSTYRENE AND POLYMERS INCORPORATING SAME

Bridgestone Corporation, ...

1. A process of making a polymer, said process comprising anionically initiating polymerization of monomers that comprise
at least one type of polyene, said anionic initiation being performed with a compound having the general formula
where M is an alkali metal atom, each Gp independently is a trihydrocarbylsilyl protecting group, m is an integer of from 2 to 5 inclusive and R is a hydrocarbyl group.

US Pat. No. 10,059,151

HEAVY-DUTY PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A heavy-duty pneumatic tire having, in a tread surface, blocks defined by a plurality of circumferential main grooves each continuously extending in a tire circumferential direction and a plurality of transverse grooves each communicating between circumferential main grooves adjacent in a tire width direction,wherein in a tire widthwise area that centers on a tire equator and whose width in the tire width direction is 50% of a tread width:
at least one of the blocks has a block partitioning groove that is open to each of transverse grooves defining the block and is shallower than the circumferential main grooves, to divide the block into a plurality of small blocks;
at least one of the small blocks has a block auxiliary groove that is open to the block partitioning groove at one end and open to a corresponding circumferential main groove or transverse groove at another end and is shallower than the circumferential main grooves; and
the pneumatic tire comprises an auxiliary lateral groove, wherein a ratio of the width of the auxiliary lateral groove to a width of the circumferential main groove is with a range of 0.05 or more to 0.11 or less,
wherein a ratio of a rubber gauge of the tread of the pneumatic tire in an area of a tire equator line DC, to a tire outer diameter OD, satisfies DC/OD ?0.015.
wherein the pneumatic tire comprises first, second, third, fourth, fifth. and sixth belt layers, and
a width of the first belt layer and a width of the second belt layer in a tread width direction TWD are 25% or more and 70% or less of a tread width TW, and
a width of the third belt layer and a width of the fourth belt layer in the tread width direction TWD are 55% or more and 90% or less of the tread width TW, and
the width of the fifth belt layer and the sixth belt layer in the tread width direction TWD are 60% or more and 110% or less of the tread width TW, and
a width of the block partitioning groove is smaller than a width of the block auxiliary groove.
US Pat. No. 9,416,257

ANTIVIBRATION RUBBER COMPOSITION, AND ANTIVIBRATION RUBBER

BRIDGESTONE CORPORATION, ...

1. An anti-vibration rubber composition characterized by comprising a rubber component containing natural rubber and polybutadiene
rubber in a compounding ratio by weight therebetween of from 60/40 to 90/10, sulfur, a bismaleimide compound and N-phenyl-N-(trichloromethylthio)benzenesulfonamide.

US Pat. No. 9,316,958

CHARGE-CONTROLLED POLYURETHANE FOAM AND TONER-CONVEYING ROLLER USING THE SAME

BRIDGESTONE CORPORATION, ...

1. A toner-conveying roller which comprises a charge-controlled polyurethane foam, wherein a surface layer of the polyurethane
foam is impregnated with a binder and a charge control agent which is on the negative side or on the positive side in the
triboelectric series with respect to the charge-controlled polyurethane foam,
wherein the charge-controlled polyurethane foam is on an outer surface of an axis member of the roller,
wherein the density of the charge-controlled polyurethane foam is 10 to 50 kg/m3, and

wherein a number of cells in the charge-controlled polyurethane foam is from 20 to 80 cells/inch.
US Pat. No. 9,056,936

COPOLYMER OF A CONJUGATED DIENE COMPOUND AND A NON-CONJUGATED OLEFIN, RUBBER COMPOSITION, CROSSLINKED RUBBER COMPOSITION, AND TIRE

BRIDGESTONE CORPORATION, ...

1. A copolymer of a conjugated diene compound and a non-conjugated olefin, comprising a random copolymer including randomly
arranged monomer units of the conjugated diene compound and of the non-conjugated olefin,
wherein the conjugated diene compound unit has a cis-1,4 bond content of at least 25%,
wherein the random structure has no crystallization temperature, which is to be derived from a block sequence including monomer
units of the non-conjugated olefin,

wherein the conjugated diene compound unit has 1,2 adducts (including 3,4 adducts) content of 5% or less, wherein the non-conjugated
olefin is contained over 0 mol % to 50 mol % or less, and

wherein the non-conjugated olefin is an acyclic olefin.

US Pat. No. 10,137,739

PNEUMATIC TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic tire with a tread, the tread comprising:a plurality of circumferential direction main grooves extending along a tire circumferential direction;
a plurality of land portion rows that are partitioned by the circumferential direction main grooves and that are formed with sipes;
lug grooves that partition each land portion row into a plurality of land portions in a row along the tire circumferential direction;
first auxiliary grooves formed on one groove width direction side of the lug grooves, the first auxiliary grooves opening onto the lug grooves and terminating inside the land portions; and
second auxiliary grooves formed on the other groove width direction side of the lug grooves, the second auxiliary grooves opening onto the lug grooves so as to face opening portions of the first auxiliary grooves that open onto the lug grooves, and terminating inside the land portions, and
terminal portions of the second auxiliary grooves being connected to the circumferential direction main grooves through fine grooves of which groove width is wider than that of the sipes,
wherein the terminal portions of the second auxiliary grooves bend toward a tire edge from an extending direction of the second auxiliary grooves, and
the fine grooves are formed on an extension of a bending direction of the terminal portions of the second auxiliary grooves.

US Pat. No. 9,487,051

PNEUMATIC RADIAL TIRE

BRIDGESTONE CORPORATION, ...

1. A pneumatic radial tire, characterized in that:
in a cross sectional view in the tire widthwise direction thereof in a state where the tire is assembled with an application
rim, inflated at a predetermined air pressure and mounted on a vehicle under a predetermined load exerted thereon, provided
that: Lout represents an imaginary line, passing through the maximum width position remotest from the tire equatorial plane in a tire
side portion situated on the vehicle outer side, to extend to be orthogonal to the tire equatorial plane; Lin represents an imaginary line, passing through the maximum width position remotest from the tire equatorial plane in a tire
side portion situated on the vehicle inner side, to extend to be orthogonal to the tire equatorial plane; Hout represents a distance in the tire radial direction between the imaginary line Lout and a ground-contact end on the vehicle outer side of the tread; and Hin represents a distance in the tire radial direction between the imaginary line Lin and a ground-contact end on the vehicle inner side of the tread, Hout
radius of curvature (Rout) of the tire side portion on the vehicle outer side, at the maximum width position thereof, is smaller than radius of curvature
(Rin) of the tire side portion on the vehicle inner side, at the maximum width position thereof;

a negative ratio of a ground-contact surface of the tread of a half portion, on the vehicle outer side with respect to the
tire equatorial plane, of the tire when the tire is mounted on the vehicle is smaller than a negative ratio of a ground-contact
surface of the tread of a half portion, on the vehicle inner side with respect to the tire equatorial plane, of the tire when
the tire is mounted on the vehicle;

an outer end in the tire radial direction of a turn-up portion around a bead core, of a carcass constituted of at least of
one carcass ply, is disposed in each of the half portions of the tire at a height in the tire radial direction of at least
40% of the tire cross sectional height under no load exerted on the tire; and

the tire cross sectional height (SH) as a height in the tire radial direction measured from the rim baseline to the outer
diameter of the tire, of the tire side portion on the vehicle outer side, is smaller than the tire cross sectional height
(SH) of the tire side portion on the vehicle inner side.