Phosphor heat-transfer method and apparatus therefor
US5746589A · kind A · utility
2Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1995 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | May 11, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor heat-treating method and an apparatus therefor capable of providing a phosphor exhibiting improved crystallizability and increased in concentration of a luminous center therein. A phosphor is heated and rapidly cooled in atmosphere gas of a predetermined pressure. The pressure substantially restrains decomposition and scattering of the phosphor during heating and cooling of the phosphor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.