Light-scattering coating, its preparation and use
US5723937A · kind A · utility
22Cited by
20References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1993 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Mar 22, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S501/90
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light-scattering coating comprising light-scattering particles, such as alumina, dispersed in a silica matrix is formed by applying to the filter a silicone solution in which is dispersed colloidal silica and the light-scattering particles to a suitable substrate and then pyrolyzing the dispersion at high temperature to drive off the organic components and form the silica matrix. This coating is hard and abrasion resistant and is useful for reflectors, lamps and lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.