Highly ordered structure pyrolitic graphite or carbon-carbon composite cathodes for plasma generation in carbon containing gases
US8148661B2 · kind B2 · utility
1Cited by
7References
5Claims
0Family size
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Key dates
| Filing date | May 16, 2007 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Mar 29, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/3436
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A DC plasma torch which includes a long lasting thermionic cathode and has a high thermal efficiency. The DC plasma torch employs a solid cathode made of graphite with highly ordered structure such as Pyrolitic Graphite or Carbon-Carbon composites. Furthermore, carbon containing gases will be used as plasma gas. The cathode will allow for theoretically an unlimited lifetime of the cathode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.