Phosphor containing barium and lead
US5223341A · kind A · utility
9Cited by
6References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 23, 1991 |
| Grant date | Jun 29, 1993 |
| Priority date | — |
| Expiry date | May 23, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor of the type utilized in a fluorescent lamp and which includes core elements barium, lead, silicon, and oxygen where a continuous, conformal outer coating of hydration and solubilization resistant aluminum oxide, which is impermeable to migration of the core elements, surrounds the core whereby the outer surface of the core is substantially entirely free of the core elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.