Silicate coated roofing granules
US4378408A · kind A · utility
70Cited by
4References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 11, 1981 |
| Grant date | Mar 29, 1983 |
| Priority date | — |
| Expiry date | Feb 11, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Roofing granules coated with insolubilized reaction product of a coating composition comprising water, kaolin clay, sodium silicate, pigment, and gas forming compound such as hydrogen peroxide or sodium perborate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.