Titanium activated hafnia and/or zirconia host phosphor containing a selected rare earth
US4996003A · kind A · utility
15Cited by
14References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1990 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Jun 29, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An intensifying screen is disclosed containing a phosphor composition comprised of monoclinic crystals of a titanium activated hafnia phosphor host containing ions of one or more rare earths selected from among those having an atomic number of 39, 62 to 64 inclusive, and 67 to 71 inclusive. A phosphor composition in which zirconia is at least partially substituted for hafnia is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.