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Dennis J. Helfritch
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Somerville, NJ, US
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last 30 patents
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Patent Grant
Method for nitrogen oxide reduction and flue gas reheating
Patent number
5,213,780
Issue date
May 25, 1993
Research-Cottrell, Inc.
Dennis J. Helfritch
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Removal of nitrogen oxides from waste gases
Patent number
4,985,219
Issue date
Jan 15, 1991
Research-Cottrell, Inc.
Dennis J. Helfritch
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Process for removing SO.sub.2 and fly ash from flue gas
Patent number
4,960,445
Issue date
Oct 2, 1990
Research-Cottrell
Dennis J. Helfritch
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Apparatus and method for enhanced chemical processing in high press...
Patent number
4,883,570
Issue date
Nov 28, 1989
Research-Cottrell, Inc.
Philip C. Efthimion
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Radiation for the selective destruction of toxic molecules on solid...
Patent number
4,832,806
Issue date
May 23, 1989
Research-Cottrell, Inc.
Dennis J. Helfritch
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL