Fluorescent lamp alkaline earth halophosphate phosphor with protective NaCs.sub.2 PrCl.sub.6 coating
US4243909A · kind A · utility
10Cited by
6References
1Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 5, 1979 |
| Grant date | Jan 6, 1981 |
| Priority date | — |
| Expiry date | Jan 5, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/44
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Improved fluorescent lamps utilize phosphors which comprise a major amount of a particulate phosphor such as a cool white alkaline earth halophosphate coated with a minor amount of a protective coating consisting of NaCs.sub.2 PrCl.sub.6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.