Inventor · disambiguated record
Douglas N. Defoe
Also filed as: DEFOE DOUGLAS N · DEFOE DOUGLAS NELSON
2 granted patents·306 citations·filing 1977–1993
66Inventor score
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2 records- 0193US5408346AOptical collimating device employing cholesteric liquid crystal and a non-transmissive reflectorKAISER ELECTRO OPTICS INC·Filed 1993·Granted Apr 18, 1995·303 cites·25 claims
- 0229US4087836ASignal processing for an imaging deviceBELL & HOWELL CO·Filed 1977·Granted May 2, 1978·3 cites·20 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →