Assignee
SIMPSON CHARLES H
3 granted patents·50 citations·filing 1978–1984
Top patents by PatentIndex Score
3 records- 0179US4435369AHydrometallurgical process for extraction of nickelSIMPSON CHARLES H·Filed 1982·Granted Mar 6, 1984·20 cites·4 claims
- 0268US4203727AProcess for reducing the sulfur content of coalSIMPSON CHARLES H·Filed 1978·Granted May 20, 1980·18 cites·2 claims
- 0346US4569678AMethod for removing pyritic, organic and elemental sulfur from coalSIMPSON CHARLES H·Filed 1984·Granted Feb 11, 1986·12 cites·48 claims
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