Inventor · disambiguated record
Robert L. Derhaag
Also filed as: DERHAAG ROBERT L
4 granted patents·292 citations·filing 1987–1996
81Inventor score
Top patents by PatentIndex Score
4 records- 0195USD310368SWireless microphoneHM ELECTRONICS INC·Filed 1987·Granted Sep 4, 1990·78 cites·1 claims
- 0290US4875233AHeadset construction and method of making sameDERHAAG ROBERT L·Filed 1987·Granted Oct 17, 1989·191 cites·26 claims
- 0370US4815143AWireless microphoneHM ELECTRONICS INC·Filed 1987·Granted Mar 21, 1989·19 cites·15 claims
- 0434US5777830ABelt-driven tape cartridge having increased tape capacityGIGATEK MEMORY SYSTEMS·Filed 1996·Granted Jul 7, 1998·4 cites·27 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →