Individual holder
CHA CHANG Y
US·6 granted patents·1 pending application·131 citations·filing 1978–2005
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
7 records- 0179US5164054ALow-cost process for hydrogen productionCHA CHANG Y·Filed 1991·Granted Nov 17, 1992·29 cites·10 claims
- 0273US4192552AMethod for establishing a combustion zone in an in situ oil shale retort having a pocket at the topCHA CHANG Y·Filed 1978·Granted Mar 11, 1980·15 cites·58 claims
- 0368US5246554AProcess for selected gas oxide removal by radiofrequency catalystsCHA CHANG Y·Filed 1991·Granted Sep 21, 1993·29 cites·2 claims
- 0460US5269892AProcess and reactor for char-gas oxide reactions by radiofrequency catalysisCHA CHANG Y·Filed 1992·Granted Dec 14, 1993·19 cites·5 claims
- 0559US5256265AProcess for oxide reactions by radiofrequency-char catalysisCHA CHANG Y·Filed 1992·Granted Oct 26, 1993·20 cites·11 claims
- 0657US5362451AProcess and reactor for char-gas oxide reactions by radiofrequency catalysisCHA CHANG Y·Filed 1993·Granted Nov 8, 1994·19 cites·8 claims
- 0740US2007126649A1Microwave based air purifierCHA CHANG Y·Filed 2005·Application pending·0 cites
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →