Electrode
US6432325B1 · kind B1 · utility
8Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Mar 2, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2223/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electron-emitting electrode for discharge lamps etc. uses an electron-emitting material which contains a first metal component selected from Ba, Sr and Ca and a second metal component selected from Ta, Zr, Nb, Ti and Hf and also contains oxynitride perovskite. The electron-emitting material has restrained evaporation during electric discharge and a high resistance to ion sputtering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.