David G. Goshaw

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Cary, NC, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of photochemically removing ammonia from gas streams
- Patent number 7,198,698
- Issue date Apr 3, 2007
- Air Control Techniques, P.C.
- John R. Richards
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Photochemical system and method for removal for formaldehyde from i...
- Patent number 6,770,174
- Issue date Aug 3, 2004
- Air Control Techniques, P.C.
- John R. Richards
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Photochemical system and method for the removal of PCDD or PCDF com...
- Patent number 6,541,677
- Issue date Apr 1, 2003
- Air Control Techniques, P.C.
- John R. Richards
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Photochemical system and method for the removal of PCDD or PCDF com...
- Publication number 20030028066
- Publication date Feb 6, 2003
- John R. Richards
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL