Phosphorescent materials
US4022709A · kind A · utility
5Cited by
8References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1975 |
| Grant date | May 10, 1977 |
| Priority date | — |
| Expiry date | Jan 22, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Phosphorescent materials and solutions suitable for their preparation, the solutions comprising a phosphorescence activator and a soluble condensation product capable of further reaction to form an insoluble condensation product, the latter being one that does not absorb ultraviolet radiation in the absorption range of the activator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.