Phosphors
US4442377A · kind A · utility
18Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1983 |
| Grant date | Apr 10, 1984 |
| Priority date | — |
| Expiry date | Mar 10, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7731
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This invention provides phosphors for use in electroluminescent devices. Each phosphor contains a dopant, selected from the group consisting of europium, erbium, and terbium and at least one of the sulphides selected from the group consisting of strontium and calcium sulphide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.