High intensity vapor discharge lamp with sintering aids for electrode emission materials
US4479074A · kind A · utility
8Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1982 |
| Grant date | Oct 23, 1984 |
| Priority date | — |
| Expiry date | Sep 2, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/0735
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Sintering aids are disclosed which improve the sintering of emission materials in high pressure discharge lamps. The sintering aid is Nb.sub.2 O.sub.5 or Ta.sub.2 O.sub.5 or a mixture thereof along with an alkaline earth oxide with is mixed in the amount of 2 to 15 weight percent sintering aid with 98 to 85 weight percent electron emissive material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.