Structure for enhancing electron emission from carbon-containing cathode
US5463271A · kind A · utility
46Cited by
7References
24Claims
0Family size
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Key dates
| Filing date | Jul 9, 1993 |
| Grant date | Oct 31, 1995 |
| Priority date | — |
| Expiry date | Jul 9, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2329/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode structure contains electronegative atoms (22), which consist of oxygen and/or fluorine, chemically bonded to a carbon-containing cathode (10). Atoms (24R) of electropositive metal are chemically bonded to the electronegative atoms. The combination of the electropositive metal atoms and the electronegative atoms enhances the electron emissivity by reducing the work function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.