Thermionic cathode
US4274030A · kind A · utility
9Cited by
11References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 3, 1979 |
| Grant date | Jun 16, 1981 |
| Priority date | — |
| Expiry date | Apr 3, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J1/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reaction thermionic cathode of the diffusion type on the basis of an activated high-temperature support metal doped with a diffusion-promoting additive for the activator substance, provided with a barrier layer inhibiting the self-diffusion of this additive in an undesired direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.