Phosphor composition, phosphor-coating composition, discharge lamp and preparation method thereof
US5433888A · kind A · utility
17Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 1993 |
| Grant date | Jul 18, 1995 |
| Priority date | — |
| Expiry date | Sep 20, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A phosphor composition contains phosphor particles and a water-soluble rare earth compound uniformly covering the surfaces of the phosphor particles. The rare earth compound is present in an amount of from 0.001 to 5% by weight in terms of the corresponding rare earth oxide, based on the weight of the phosphor particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.