Roofing granules with high solar reflectance, roofing materials with high solar reflectance, and the process of making the same
US8394498B2 · kind B2 · utility
17Cited by
97References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 2008 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Feb 17, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Roofing granules include a core having an average ultraviolet transmission of greater than sixty percent and an average near infrared reflectance of greater than sixty percent and a UV coating layer on the exterior surface. The coating provides UV opacity, while the core provides near infrared reflectance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.