Method of making a cathode from tungsten and iridium powders using a reaction product from reacting barium peroxide with an excess of tungsten as the impregnant
US4895699A · kind A · utility
4Cited by
3References
6Claims
0Family size
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Key dates
| Filing date | Aug 24, 1989 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | Aug 24, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/047
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode is made from a mixture of tungsten and iridium powders using a ction product formed from reacting barium peroxide with an excess of tungsten as the impregnant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.