Method of manufacturing integral shadow gridded controlled porosity, dispenser cathodes
US4745326A · kind A · utility
6Cited by
8References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1986 |
| Grant date | May 17, 1988 |
| Priority date | — |
| Expiry date | Dec 10, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A controlled porosity dispenser cathode and method of manufacture therefo using chemical vapor deposition and laser drilling, ion milling, or electron discharge machining for consistent and economical manufacturing a cathode with pores on the order of 0.2 to 2 .mu.m in diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.