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US 9,446,980 B2Granted
Ceramic glaze having antimicrobial property
AssigneeMicroban Products Company
InventorAlvin Lamar Campbell, Jr.
Life of this patent
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Abstract
An antimicrobial ceramic glazing composition contains one or more antimicrobial agents disposed therein. Methods for making and using the glazing composition are disclosed, as well as substrates having a fired antimicrobial glaze thereon. The antimicrobial agents comprise metallic oxides, with a subset of the disclosed combinations exhibiting synergistic effect in fired glazes.
Claims13
An antimicrobial ceramic glazing composition, comprising:
- a ceramic glaze base adapted to be fired at a firing temperature of from at least about 1062° C.;
- and
- an antimicrobial composition including:
- a first antimicrobial agent consisting of Ag2CO3;
- and
- a second antimicrobial agent that is one of Bi2O3, CuO or ZnO;
- wherein the first antimicrobial agent is present in the glaze composition at a concentration of about 0.5 to about four percent, by weight of glaze composition;
- and
- wherein the second antimicrobial agent is present in the glaze composition at a concentration of from about one percent to about four percent, by weight of glaze composition;
- and
- wherein the glazing composition is adapted to possess an antimicrobial property after a conventional firing process at the firing temperature.
8 more elements
A glazed ceramic substrate, comprising:
- a ceramic substrate having a first substrate surface;
- and
- a fired antimicrobial ceramic glazing composition disposed on the first substrate surface;
- wherein the fired antimicrobial ceramic glazing composition is a post-fired state of an antimicrobial ceramic glazing composition including:
- a first antimicrobial agent consisting of Ag2CO3;
- and
- a second antimicrobial agent that is one of Bi2O3, CuO or ZnO;
- wherein the first antimicrobial agent is present in the glaze composition at a concentration of about 0.5 to about four percent, by weight of glaze composition;
- and
- wherein the second antimicrobial agent is present in the glaze composition at a concentration of from about one percent to about four percent, by weight of glaze composition.
7 more elements
Dependencies are inferred from the claim text.