Oxide cathode
US5519280A · kind A · utility
3Cited by
4References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1994 |
| Grant date | May 21, 1996 |
| Priority date | — |
| Expiry date | Mar 21, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J1/142
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An oxide cathode is provided including an electron emissive material layer including barium, a metal base, a sleeve and a heater, wherein the electron emissive material layer further includes 0.1 to 20 wt. % of tin or a tin compound, based on the total amount of the electron emissive material, and indium or an indium compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.