Inventor · disambiguated record
David O'Keefe
Also filed as: O'KEEFE DAVID · O'KEEFE DAVID M
9 granted patents·3 pending applications·82 citations·filing 1986–2017
87Inventor score
Files withBIOFILTER SYSTEMS LLC4ROBERTSON MARK B3TEXAS EXPLOSIVES CO INC2O'KEEFE DAVID M1PURPOSE ENERGY INC1
Top patents by PatentIndex Score
12 records- 0191US8388833B2System and process for removing nitrogen compounds and odors from wastewater and wastewater treatment systemROBERTSON MARK B·Filed 2011·Granted Mar 5, 2013·11 cites·17 claims
- 0289US9272931B2System and process for removing nitrogen compounds and odors from wastewater and wastewater treatment systemBIOFILTER SYSTEMS LLC·Filed 2013·Granted Mar 1, 2016·7 cites·20 claims
- 0388US10053384B2System and process for removing nitrogen compounds and odors from wastewater and wastewater treatment systemBIOFILTER SYSTEMS LLC·Filed 2015·Granted Aug 21, 2018·4 cites·19 claims
- 0487US8585892B2System and process for removing nitrogen compounds and odors from wastewater and wastewater treatment systemROBERTSON MARK B·Filed 2010·Granted Nov 19, 2013·13 cites·20 claims
- 0581US6982035B1Biphase orbicular biodigesterO'KEEFE DAVID M·Filed 2004·Granted Jan 3, 2006·33 cites·6 claims
- 0677US7727395B2Method and apparatus for processing organic wastePURPOSEENERGY INC·Filed 2008·Granted Jun 1, 2010·9 cites·21 claims
- 0776US9440870B2System and process for removing nitrogen compounds and odors from wastewater and wastewater treatment systemBIOFILTER SYSTEMS LLC·Filed 2013·Granted Sep 13, 2016·2 cites·23 claims
- 0860US2016362321A1System and Process for Removing Nitrogen Compounds and Odors from Wastewater and Wastewater Treatment SystemBIOFILTER SYSTEMS LLC·Filed 2016·Application pending·0 cites
- 0958US2014034558A1System and process for removing nitrogen compounds and odors from wastewater and wastewater treatment systemROBERTSON MARK B·Filed 2013·Application pending·0 cites
- 1045US2018370830A1System and method for continuous processing of organic waste with undigested solids recirculationPURPOSE ENERGY INC·Filed 2017·Application pending·0 cites
- 1135US4751289AHexanitrotetrachloroazobenzene and method of preparationTEXAS EXPLOSIVES CO INC·Filed 1986·Granted Jun 14, 1988·3 cites·5 claims
- 1227US4833265ADATB and its bis-urethanTEXAS EXPLOSIVES CO INC·Filed 1987·Granted May 23, 1989·0 cites·2 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →