US Patent No. 10,427,986

ANTIMICROBIAL GLAZE AND PORCELAIN ENAMEL VIA DOUBLE LAYER GLAZE WITH HIGH ZINC CONTENT


Patent No. 10,427,986
Issue Date October 01, 2019
Title Antimicrobial Glaze And Porcelain Enamel Via Double Layer Glaze With High Zinc Content
Inventorship Zheng Chen, Flemington, NJ (US)
James Michael McHale, Hillsborough, NJ (US)
Assignee Ideal Standard International BVBA, Brussels (BE)

Claim of US Patent No. 10,427,986

1. A multilayer antimicrobial glaze/enamel, comprising:a base glaze layer, wherein the base glaze layer comprises less than about 8.0 percent by weight ZnO; and
a top glaze layer, wherein the top glaze layer comprises about 8.0 percent by weight to about 35.0 percent by weight ZnO,
wherein the base glaze layer is between about 300 ?m and 1000 ?m in thickness;
wherein the top glaze layer is between about 25 ?m and 250 ?m in thickness;
wherein relative thicknesses and concentrations of the top glaze layer and base glaze layer are such that a total concentration of the multilayer antimicrobial glaze/enamel is less than about 5.0 percent by weight ZnO; and
wherein the multilayer antimicrobial glaze/enamel is substantially free of surface defects.