US Pat. No. 10,494,274

LIQUID SUBSTANCE STERILIZING METHOD AND APPARATUS

NIHON SPINDLE MANUFACTURI...

1. A liquid substance sterilization method for sterilizing a liquid substance by causing cavitation in the liquid substance and generating plasma with a plasma generation mechanism in air bubbles generated in the liquid substance by the cavitation, the method comprising:causing the cavitation in the liquid substance by stirring the liquid substance with a rotary blade; and
generating the plasma with the plasma generation mechanism.

US Pat. No. 10,798,807

STRUCTURE OF REMOVING STATIC ELECTRICITY IN LOW-HUMIDITY SPACE

NIHON SPINDLE MANUFACTURI...

1. A static electricity removal structure comprising:a static electricity removal device configured to:
be present in a booth space when a laminar flow of air is about 0.005 to 0.1 m/s, and
remove static electricity from the air that is in the booth space,
wherein the static electricity removal device is sited in the booth space in a manner that permits a flow of the air in the booth space to flow, as the laminar flow of the air, across the static electricity removal device.

US Pat. No. 10,637,057

METHOD FOR MANUFACTURING SLURRY FOR POSITIVE ELECTRODE OF NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND APPARATUS THEREFOR

NIHON SPINDLE MANUFACTURI...

1. A method for manufacturing a slurry for a positive electrode of a nonaqueous electrolyte secondary battery using an aqueous solvent containing an alkali metal complex oxide, comprising:while causing a raw material slurry containing a solid content and the solvent as slurry raw materials for a positive electrode of the nonaqueous electrolyte secondary battery to flow along a path, performing a neutralization treatment on an alkali component in the raw material slurry by inorganic carbon supplied to the raw material slurry flowing along the path.

US Pat. No. 9,579,831

PLASTIC WORKING METHOD AND SPINNING MACHINE USED IN THE SAME

NIHON SPINDLE MANUFACTURI...

2. A spinning machine, comprising:
a chuck for holding an outer circumferential surface of a cylindrical material having a bottom wall, the chuck adapted to
be driven by a main shaft about an axial center;

a regulation member adapted to abut an outer surface of the bottom wall of the material;
a mandrel adapted to extend through an opening side end portion of the cylindrical material, the mandrel including a tip adapted
to abut an inner surface of the bottom wall of the cylindrical material, the mandrel holding the bottom wall of the material
adjacent the regulation member; and

a press roller including a press roller surface for engaging an outer circumferential surface of the opening side end portion
of the cylindrical material, the press roller movable in a direction toward the mandrel and adapted to mold a circumferential
groove portion on the outer circumferential surface of the opening side end portion so that an inner diameter of the opening
side end portion of the material is smaller than an inner diameter of a body of the material,

a finishing roller including a finishing roller surface for simultaneously engaging the outer circumferential surface and
an end surface in the opening side end portion of the material, the finishing roller movable in a direction toward an axis
of rotation of the chuck, and

wherein at least a portion of the mandrel adapted to extend through the opening side end portion of the cylindrical material
is radially spaced apart from an inner circumferential surface by a gap after the opening side end portion of the cylindrical
material is plastically deformed.