The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 10, 2026
Filed:
Jan. 09, 2024
3m Innovative Properties Company, St. Paul, MN (US);
Taisiya Skorina, Woodbury, MN (US);
Rebecca L. A. Everman, Falcon Heights, MN (US);
Jean A. Tangeman, Minneapolis, MN (US);
Eric J. Vanbruggen, Hudson, WI (US);
Kenton D. Budd, Woodbury, MN (US);
Rachael A. T. Gould, Forest Lake, MN (US);
Robert P. Brown, Hudson, WI (US);
Lara K. N. Ughetta, Woodbury, MN (US);
Jonathan A. Hubin, White Bear Lake, MN (US);
Zachary M. Schaeffer, Maplewood, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A method is disclosed for producing photocatalytic coated ceramic granules. The method involves providing a coatable composition containing an inorganic binder and a variety of photocatalytic particles, such as TiO2, ZnO, Ti(OH)4, doped derivatives, or combinations thereof. These photocatalytic particles have a surface area per weight of no more than 15 m2/g. The coatable composition is then applied to uncoated base ceramic granules, resulting in intermediate coated granules. Finally, the intermediate coated granules are heated at a temperature of at least 700° C., leading to the formation of photocatalytic coated ceramic granules. These granules exhibit a Total Solar Reflectance (TSR) value of at least 0.7. This method offers an efficient and effective way to produce ceramic granules with enhanced photocatalytic properties.