Inventor · disambiguated record
Robert D. Gengelbach
Also filed as: GENGELBACH ROBERT · GENGELBACH ROBERT D
8 granted patents·1 pending application·211 citations·filing 1980–2017
88Inventor score
Top patents by PatentIndex Score
9 records- 0195US8541795B2Side-emitting optical coupling deviceKELLER BERND·Filed 2005·Granted Sep 24, 2013·49 cites·34 claims
- 0292US7246921B2Back-reflecting LED light sourceILLUMITECH INC·Filed 2005·Granted Jul 24, 2007·79 cites·21 claims
- 0386US9287474B2Side-emitting optical coupling deviceCREE INC·Filed 2013·Granted Mar 15, 2016·4 cites·32 claims
- 0484US7108386B2High-brightness LED-phosphor couplingILLUMITECH INC·Filed 2004·Granted Sep 19, 2006·39 cites·14 claims
- 0578US7068446B2Compact non-imaging light collectorILLUMITECH INC·Filed 2004·Granted Jun 27, 2006·21 cites·20 claims
- 0668US4310237AAdjusting copy contrast and densityEASTMAN KODAK CO·Filed 1980·Granted Jan 12, 1982·15 cites·3 claims
- 0757US9557033B2Optical system for batwing distributionJACOBSON BENJAMIN A·Filed 2008·Granted Jan 31, 2017·4 cites·16 claims
- 0842US10877253B2Optical systemPELKA & ASS INC·Filed 2017·Granted Dec 29, 2020·0 cites·15 claims
- 0942US2007014035A1Compact non-imaging light collectorILLUMITECH INC·Filed 2006·Application pending·0 cites
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