Opaque silica composition
US5900381A · kind A · utility
4Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1997 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Aug 26, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An opaque silica comprises silica and at least one second phase solid material. The at least one second phase solid material is essentially uniformly dispersed in the silica. A cut surface formed through the silica is free from surface defects since the at least one second phase solid material forms an opaque silica that is free from porosity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.