Tinted UV cured coatings for photoflash lamps
US4235590A · kind A · utility
2Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1978 |
| Grant date | Nov 25, 1980 |
| Priority date | — |
| Expiry date | Dec 22, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21K5/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
For use in a color-corrected photoflash unit, a flashlamp having a clear glass envelope with a transparent protective exterior coating comprising a UV curable photopolymer tinted with a colorant providing a portion of the total color correction capability of the unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.