Inventor · disambiguated record
Bowie G. Keefer
Also filed as: KEEFER BOWIE G · KEEFER BOWIE GORDON
59 granted patents·7 pending applications·6,456 citations·filing 1978–2017
99Inventor score
Files withQUESTAIR TECHNOLOGIES INC29KEEFER BOWIE15XEBEC ADSORPTION INC5G4 INSIGHTS INC4QUESTOR IND INC3
Top patents by PatentIndex Score
66 records- 0199US7097925B2High temperature fuel cell power plantQUESTAIR TECHNOLOGIES INC·Filed 2003·Granted Aug 29, 2006·189 cites·30 claims
- 0299US4816121AGas phase chemical reactorKEEFER BOWIE·Filed 1986·Granted Mar 28, 1989·175 cites·30 claims
- 0399US4187173AReverse osmosis method and apparatusKEEFER BOWIE·Filed 1978·Granted Feb 5, 1980·145 cites·19 claims
- 0498US7758988B2System that includes a fuel cell and an oxygen gas delivery systemXEBEC ADSORPTION INC·Filed 2006·Granted Jul 20, 2010·56 cites·29 claims
- 0598US6921597B2Electrical current generation systemQUESTAIR TECHNOLOGIES INC·Filed 2001·Granted Jul 26, 2005·118 cites·16 claims
- 0698US6514318B2Multistage system for separating gas by adsorptionQUESTAIR TECHNOLOGIES INC·Filed 2001·Granted Feb 4, 2003·146 cites·22 claims
- 0798US6451095B1Modular pressure swing adsorption apparatusQUESTAIR TECHNOLOGIES INC·Filed 2000·Granted Sep 17, 2002·174 cites·17 claims
- 0898US6406523B1Rotary pressure swing adsorption apparatusQUESTAIR TECHNOLOGIES INC·Filed 2000·Granted Jun 18, 2002·276 cites·92 claims
- 0998US6176897B1High frequency pressure swing adsorptionQUESTOR IND INC·Filed 1997·Granted Jan 23, 2001·280 cites·76 claims
- 1098US5082473AExtraction and concentration of a gas componentKEEFER BOWIE·Filed 1990·Granted Jan 21, 1992·201 cites·44 claims
- 1198US4968329APressure swing adsorption for concentration of a gas componentKEEFER BOWIE·Filed 1988·Granted Nov 6, 1990·165 cites·59 claims
- 1298US4801308AApparatus and process for pressure swing adsorption separationKEEFER BOWIE·Filed 1986·Granted Jan 31, 1989·181 cites·41 claims
- 1398US4288326ARotary shaft driven reverse osmosis method and apparatusKEEFER BOWIE·Filed 1979·Granted Sep 8, 1981·114 cites·34 claims
- 1498US4230564ARotary reverse osmosis apparatus and methodKEEFER BOWIE·Filed 1978·Granted Oct 28, 1980·122 cites·27 claims
- 1597US7687044B2Chemical reactor with pressure swing adsorptionXEBEC ADSORPTION INC·Filed 2007·Granted Mar 30, 2010·62 cites·40 claims
- 1697US7674539B2Systems and processes for providing hydrogen to fuel cellsXEBEC ADSORPTION INC·Filed 2006·Granted Mar 9, 2010·58 cites·4 claims
- 1797US7285350B2Enhanced solid oxide fuel cell systemsQUESTAIR TECHNOLOGIES INC·Filed 2003·Granted Oct 23, 2007·155 cites·8 claims
- 1897US7094275B2Modular pressure swing adsorption apparatusQUESTAIR TECHNOLOGIES INC·Filed 2003·Granted Aug 22, 2006·137 cites·33 claims
- 1997US6866950B2Methods and apparatuses for gas separation by pressure swing adsorption with partial gas product feed to fuel cell power sourceQUESTAIR TECHNOLOGIES INC·Filed 2001·Granted Mar 15, 2005·159 cites·71 claims
- 2097US6514319B2Life support oxygen concentratorQUESTAIR TECHNOLOGIES INC·Filed 2000·Granted Feb 4, 2003·167 cites·41 claims
- 2197US6056804AHigh frequency rotary pressure swing adsorption apparatusQUESTOR IND INC·Filed 1998·Granted May 2, 2000·169 cites·28 claims
- 2297US5256172AThermally coupled pressure swing adsorptionKEEFER BOWIE·Filed 1992·Granted Oct 26, 1993·169 cites·43 claims
- 2397US4973408AReverse osmosis with free rotor booster pumpKEEFER BOWIE·Filed 1989·Granted Nov 27, 1990·123 cites·25 claims
- 2496US7645324B2Engineered adsorbent structures for kinetic separationXEBEC ADSORPTION INC·Filed 2006·Granted Jan 12, 2010·80 cites·52 claims
- 2596US7160367B2PSA with adsorbents sensitive to contaminantsQUESTAIR TECHNOLOGIES INC·Filed 2004·Granted Jan 9, 2007·98 cites·41 claims
- 2696US7087331B2Energy efficient gas separation for fuel cellsQUESTAIR TECHNOLOGIES INC·Filed 2001·Granted Aug 8, 2006·91 cites·92 claims
- 2796US7041272B2Systems and processes for providing hydrogen to fuel cellsQUESTAIR TECHNOLOGIES INC·Filed 2001·Granted May 9, 2006·97 cites·78 claims
- 2896US6902602B2Gas separation by combined pressure swing and displacement purgeQUESTAIR TECHNOLOGIES INC·Filed 2003·Granted Jun 7, 2005·128 cites·31 claims
- 2996US6565635B2Layered manifold pressure swing adsorption device and methodQUESTAIR TECHNOLOGIES INC·Filed 2001·Granted May 20, 2003·139 cites·57 claims
- 3096US6063161AFlow regulated pressure swing adsorption systemSOFINOY SOCIETTE FINANCIERE D·Filed 1996·Granted May 16, 2000·274 cites·46 claims
- 3196US4702903AMethod and apparatus for gas separation and synthesisKEEFER BOWIE·Filed 1986·Granted Oct 27, 1987·122 cites·54 claims
- 3296US4434056AMulti-cylinder reverse osmosis apparatus and methodKEEFER BOWIE·Filed 1981·Granted Feb 28, 1984·89 cites·25 claims
- 3395US8541637B2Process and system for thermochemical conversion of biomassBABICKI MATTHEW L·Filed 2010·Granted Sep 24, 2013·65 cites·50 claims
- 3495US8383871B1Method of hydrogasification of biomass to methane with low depositable tarsSELLARS BRIAN G·Filed 2011·Granted Feb 26, 2013·49 cites·21 claims
- 3595US7902114B2Adsorbent coating compositions, laminates and adsorber elementsXEBEC ADSORPTION INC·Filed 2007·Granted Mar 8, 2011·44 cites·26 claims
- 3695US6742507B2Feed composition modification for internal combustion enginesQUESTAIR TECHNOLOGIES INC·Filed 2001·Granted Jun 1, 2004·146 cites·56 claims
- 3795US6692626B2Adsorbent laminate structuresQUESTAIR TECHNOLOGIES INC·Filed 2001·Granted Feb 17, 2004·113 cites·12 claims
- 3895US6488747B1Pressure swing adsorption with axial or centrifugal compression machineryQUESTAIR TECHNOLOGIES INC·Filed 2000·Granted Dec 3, 2002·109 cites·44 claims
- 3995US6051050AModular pressure swing adsorption with energy recoveryQUESTOR IND INC·Filed 1997·Granted Apr 18, 2000·175 cites·107 claims
- 4094US8015808B2Power plant with energy recovery from fuel storageG4 INSIGHTS INC·Filed 2006·Granted Sep 13, 2011·39 cites·24 claims
- 4194US7553568B2High efficiency load-following solid oxide fuel cell systemsKEEFER BOWIE G·Filed 2004·Granted Jun 30, 2009·77 cites·18 claims
- 4294USRE40006EFlow regulated pressure swing adsorption systemQUESTAIR TECHNOLOGIES INC·Filed 2004·Granted Jan 22, 2008·79 cites·68 claims
- 4394US7250073B2Life support oxygen concentratorQUESTAIR TECHNOLOGIES INC·Filed 2004·Granted Jul 31, 2007·82 cites·8 claims
- 4494USRE38493EFlow regulated pressure swing adsorption systemQUESTAIR TECHNOLOGIES INC·Filed 2002·Granted Apr 13, 2004·83 cites·112 claims
- 4593US7387849B2Hydrogen recycle for solid oxide fuel cellQUESTAIR TECHNOLOGIES INC·Filed 2003·Granted Jun 17, 2008·54 cites·14 claims
- 4693US7037358B2PSA with adsorbents sensitive to contaminantsQUESTAIR TECHNOLOGIES INC·Filed 2001·Granted May 2, 2006·88 cites·120 claims
- 4793US6533846B1Modular pressure swing adsorption apparatus with clearance-type valve sealsQUESTAIR TECHNOLOGIES INC·Filed 2001·Granted Mar 18, 2003·104 cites·68 claims
- 4893US5096469AAdsorptive gas separator with inertial energy exchangeKEEFER BOWIE·Filed 1990·Granted Mar 17, 1992·100 cites·42 claims
- 4992US6840985B2Surge absorber flow regulation for modular pressure swing adsorptionQUESTAIR TECHNOLOGIES INC·Filed 2001·Granted Jan 11, 2005·61 cites·9 claims
- 5091US4432876AReverse osmosis apparatus and method incorporating external fluid exchangeSEAGOLD IND CORP·Filed 1980·Granted Feb 21, 1984·67 cites·15 claims
Showing the top 50 of 66 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →