Assignee
HYDROCHEM DEV LTD
CA·6 granted patents·225 citations·filing 1985–1994
Top patents by PatentIndex Score
6 records- 0190US4834793AOxidation process for releasing metal values in which nitric acid is regenerated in situHYDROCHEM DEV LTD·Filed 1987·Granted May 30, 1989·56 cites·22 claims
- 0284US4878677AShut off seal about a shaft of a device having a side entry into a tankHYDROCHEM DEV LTD·Filed 1988·Granted Nov 7, 1989·65 cites·9 claims
- 0379US4750994AFlotation apparatusHYDROCHEM DEV LTD·Filed 1987·Granted Jun 14, 1988·45 cites·15 claims
- 0471US5013359AProcess for recovering gold from refractory sulfidic oresHYDROCHEM DEV LTD·Filed 1988·Granted May 7, 1991·29 cites·15 claims
- 0571US4670051AOxidation process for releasing metal values in which nitric acid is regenerated in situHYDROCHEM DEV LTD·Filed 1985·Granted Jun 2, 1987·21 cites·28 claims
- 0645US5509535AFlotation apparatusHYDROCHEM DEV LTD·Filed 1994·Granted Apr 23, 1996·9 cites·9 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →