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George T. Sperl
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Grayslake, IL, US
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last 30 patents
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Patent Grant
Composition for reducing the amount of and preventing the formation...
Patent number
5,750,392
Issue date
May 12, 1998
Geo-Microbial Technologies, Inc.
Donald O. Hitzman
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method for reducing the amount of and preventing the formation of h...
Patent number
5,405,531
Issue date
Apr 11, 1995
Geo-Microbial Technologies, Inc.
Donald O. Hitzman
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method for treatment of catalysts using denitrifying bacteria
Patent number
5,250,483
Issue date
Oct 5, 1993
Geo-Microbial Technologies, Inc.
George T. Sperl
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Catalase-negative Pichia pastoris
Patent number
5,204,261
Issue date
Apr 20, 1993
Phillips Petroleum Company
William D. Prevatt
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Enhanced oil recovery using denitrifying microorganisms
Patent number
5,044,435
Issue date
Sep 3, 1991
Injectech, Inc.
George T. Sperl
E21 - EARTH DRILLING MINING
Information
Patent Grant
Transformation of yeasts of the genus pichia
Patent number
4,879,231
Issue date
Nov 7, 1989
Phillips Petroleum Company
David W. Stroman
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Pichia pastoris argininosuccinate lyase gene and uses thereof
Patent number
4,818,700
Issue date
Apr 4, 1989
Phillips Petroleum Company
James M. Cregg
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Novel backteria and single cell protein production therewith
Patent number
4,795,708
Issue date
Jan 3, 1989
Phillips Petroleum Company
George T. Sperl
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...