Field emission cathode of glassy carbon and method of preparation
US4143292A · kind A · utility
41Cited by
3References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1976 |
| Grant date | Mar 6, 1979 |
| Priority date | — |
| Expiry date | Jun 25, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2201/30457
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A field emission cathode comprising a cathode base composed of carbon or a high-melting-point metal and a needle-shaped cathode composed of glassy carbon, which can provide a high field emission stably even under a high vacuum pressure, and a method for the preparation of this field emission cathode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.