Phosphor
US5156764A · kind A · utility
11Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1991 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Aug 12, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7796
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A trivalent metal phosphate phosphor having a composition of the formula: EQU (Ln.sub.1-x Ln'.sub.x).sub.3 PO.sub.7 (I) wherein Ln is at least one member selected from the group consisting of yttrium, lanthanum, gadolinium and lutetium, Ln' is at least one member selected from the group consisting of terbium, cerium, europium, praseodymium, samarium, dysprosium, erbium, thulium and holmium, and x is a number satisfying 0.0001.ltoreq.x.ltoreq.0.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.