Reduced puffing needle coke from coal tar
US8828348B2 · kind B2 · utility
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27References
6Claims
0Family size
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Key dates
| Filing date | Jul 21, 2011 |
| Grant date | Sep 9, 2014 |
| Priority date | — |
| Expiry date | Jan 11, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10C1/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A reduced puffing needle coke is formed, which includes a lesser amount of nitrogen within the coke so that carbon articles produced from such coke experience minimal expansion upon heating to graphitization temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.