Inventor · disambiguated record
David E. Cowan
Also filed as: COWAN DAVID · COWAN DAVID E
12 granted patents·1 pending application·198 citations·filing 1994–2018
91Inventor score
Top patents by PatentIndex Score
13 records- 0189US7588387B1Barriers with interlocking sidesWALL PRODUCTS LLC OFF·Filed 2006·Granted Sep 15, 2009·27 cites·12 claims
- 0286US10556135B2Portable chemical oxygen generatorRAPID OXYGEN COMPANY INC·Filed 2018·Granted Feb 11, 2020·2 cites·39 claims
- 0386USD406543STraffic channelizerPLASTIC SAFETY SYSTEMS INC·Filed 1998·Granted Mar 9, 1999·31 cites·1 claims
- 0484US6182600B1Traffic channeling devicePLASTIC SAFETY SYSTEMS INC·Filed 1998·Granted Feb 6, 2001·58 cites·17 claims
- 0581US9849312B1Portable chemical oxygen generatorRAPID OXYGEN COMPANY INC·Filed 2016·Granted Dec 26, 2017·4 cites·18 claims
- 0680US10039942B2Portable chemical oxygen generatorRAPID OXYGEN COMPANY INC·Filed 2017·Granted Aug 7, 2018·1 cites·20 claims
- 0778US7922420B2Barriers with kiss-offsWALL PRODUCTS LLC OFF·Filed 2009·Granted Apr 12, 2011·11 cites·16 claims
- 0870US6769207B1Portable sign assemblyPLASTIC SAFETY SYSTEMS INC·Filed 2002·Granted Aug 3, 2004·10 cites·12 claims
- 0969USD533281SBarrier with interlocking sidesWALL PRODUCTS LLC OFF·Filed 2005·Granted Dec 5, 2006·19 cites·1 claims
- 1063US5421668ATread ballast or weight for temporary traffic control devices and postsPLASTIC SAFETY SYSTEMS INC·Filed 1994·Granted Jun 6, 1995·30 cites·26 claims
- 1155US10926113B2Portable chemical oxygen generatorRAPID OXYGEN COMPANY INC·Filed 2017·Granted Feb 23, 2021·0 cites·22 claims
- 1250USD924405SPortable oxygen deviceRAPID OXYGEN COMPANY INC·Filed 2017·Granted Jul 6, 2021·5 cites·1 claims
- 1346US2014190395A1Portable roadway warning devicePLASTIC SAFETY SYSTEMS INC·Filed 2014·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →