Method of making fluorescent lamp with improved lumen output
US4778581A · kind A · utility
2Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1987 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Feb 17, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/42
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The lumen output of a fluorescent lamp is improved by the triode radio frequency sputter coating of a continuous protective coating of vitreous alumina overlying the lamp phosphor layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.