Biocidal roofing granules, roofing products including such granules, and process for preparing same
US9980480B2 · kind B2 · utility
9Cited by
240References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2012 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Sep 25, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24388
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Biocidal roofing granules are prepared by providing a mineral core and at least one biocidal photocatalytic metal oxide. A gel-forming inorganic coating medium is prepared and used to coat the mineral core to form a coating layer having a porous network on the mineral core, and the at least one biocidal photocatalytic metal oxide is disposed in the porous network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.