Assignee
CHEN HAI C
TW·3 granted patents·115 citations·filing 1987–1989
Top patents by PatentIndex Score
3 records- 0167US5004076AApparatus for controlling an electric elevatorCHEN HAI C·Filed 1989·Granted Apr 2, 1991·25 cites·10 claims
- 0264US4970504ASecurity systemCHEN HAI C·Filed 1988·Granted Nov 13, 1990·64 cites·4 claims
- 0347US4812841AComputer-controlled password lockCHEN HAI C·Filed 1987·Granted Mar 14, 1989·26 cites·2 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →