Alkaline earth hafnate phosphor with cerium luminescence
US5124072A · kind A · utility
26Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1991 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Dec 2, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7718
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor comprising an effective amount of cerium to provide luminescence, and the balance substantially an oxide compound of hafnium and an alkaline earth from the group consisting of barium, strontium, calcium, and mixtures thereof, having substantially a perovskite crystal form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.