Hafnium stannate phosphor composition and X-ray intensifying screen
US5336893A · kind A · utility
2Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 1993 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | May 18, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K2004/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A phosphor composition which comprises oxygen and a combination of elements satisfying the relationship: EQU [(Hf.sub.1-z Zr.sub.z).sub.1+x Sn.sub.1-x ].sub.1-y Ti.sub.2y wherein: x is in the range of from about -0.4 to 0.95 2y is in the range of from 0 to 0.5 and z is in the range of from 0 to 0.5 These phosphors exhibit an orthorhombic crystal structure, and are useful in intensifying screens for producing a latent image in a silver halide radiographic element when imagewise exposed to X-radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.