Process for producing an impregnated cathode with an integrated grid, cathode obtained by this process and electron tube equipped with such a cathode
US4459323A · kind A · utility
2Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1981 |
| Grant date | Jul 10, 1984 |
| Priority date | — |
| Expiry date | Apr 15, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A complementary grid made from a volatile material is formed on the surface of the cathode, which is then covered with the material of the grid (parts 5 and 6). After the volatilization of the complementary grid there leaves an integrated grid (part 6) on this surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.