David G. Doman

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Surrey, CA

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Patents Grantslast 30 patents

Information Patent Grant
Flow regulated pressure swing adsorption system
- Patent number RE38493
- Issue date Apr 13, 2004
- QuestAir Technologies Inc.
- Bowie G. Keefer
- 095 - Gas separation: processes
Information Patent Grant
Layered manifold pressure swing adsorption device and method
- Patent number 6,565,635
- Issue date May 20, 2003
- QuestAir Technologies, Inc.
- Bowie G. Keefer
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Modular pressure swing adsorption apparatus
- Patent number 6,451,095
- Issue date Sep 17, 2002
- QuestAir Technologies, Inc.
- Bowie Gordon Keefer
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Rotary pressure swing adsorption apparatus
- Patent number 6,406,523
- Issue date Jun 18, 2002
- QuestAir Technologies, Inc.
- Denis J. Connor
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Flow regulated pressure swing adsorption system
- Patent number 6,063,161
- Issue date May 16, 2000
- SoFinoy Societte Financiere d'Innovation Inc.
- Bowie Gordon Keefer
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Modular pressure swing adsorption with energy recovery
- Patent number 6,051,050
- Issue date Apr 18, 2000
- Questor Industries Inc.
- Bowie G. Keefer
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Modular pressure swing adsorption apparatus
- Publication number 20050145111
- Publication date Jul 7, 2005
- QuestAir Technologies, Inc.
- Bowie G. Keefer
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Spacerless parallel passage contractor
- Publication number 20040197596
- Publication date Oct 7, 2004
- QUESTAIR TECHNOLOGIES INC.
- Denis J. Connor
- F28 - HEAT EXCHANGE IN GENERAL
Information Patent Application
Modular pressure swing adsorption apparatus
- Publication number 20030070550
- Publication date Apr 17, 2003
- Bowie Gordon Keefer
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Adsorbent coating compositions, laminates and adsorber elements com...
- Publication number 20020170436
- Publication date Nov 21, 2002
- Bowie G. Keefer
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Layered manifold pressure swing adsorption device and method
- Publication number 20020066367
- Publication date Jun 6, 2002
- Bowie G. Keefer
- C01 - INORGANIC CHEMISTRY