Roofing granules with a decorative metallic appearance
US6548145B2 · kind B2 · utility
50Cited by
10References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 10, 2001 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Jun 29, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Colored roofing granules and methods for their preparations, having decorative metallic appearance and enhanced stability against discoloration of color containing a silica-encapsulated metallic flake or colored lamellar effect pigment distributed in an insolubilized alkali silicate coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.