Hyperbright white roofing granules with high solar reflectance
US11226432B2 · kind B2 · utility
1Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Nov 5, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24413
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention provides a bright white refractory roofing granule, comprising a ceramic material formed from a substantially homogenous mixture of a ceramic-forming clay, sintering material, and optionally comprising silica particles, and other potential additives, said bright white refractory roofing granule having a total solar reflectance of at least 0.80 and a Hunter Color Lvalue of at least 85.0, together with processes for making and using the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.