Colored roofing granules with increased solar heat reflectance, solar heat-reflective shingles, and process for producing same
US8535803B2 · kind B2 · utility
10Cited by
116References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2011 |
| Grant date | Sep 17, 2013 |
| Priority date | — |
| Expiry date | Mar 21, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Solar-reflective roofing granules having deep-tone colors are formed by coating base mineral particles with a coating composition including an infrared-reflective pigment. Color is provided by colored infrared pigment, light-interference platelet pigment, or a metal oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.