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Howell Allen Hammond
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Rochester, NY, US
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last 30 patents
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Patent Grant
Blocked pyrazolone magenta dye-forming couplers
Patent number
T101004
Issue date
Sep 1, 1981
Thomas E. Gompf
548 - Organic compounds
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Patent Grant
Silver halide elements containing blocked pyrazolone magenta dye-fo...
Patent number
4,283,472
Issue date
Aug 11, 1981
Eastman Kodak Company
Thomas E. Gompf
C07 - ORGANIC CHEMISTRY
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Patent Grant
Cyanoethyl-containing blocked development restrainers
Patent number
4,009,029
Issue date
Feb 22, 1977
Eastman Kodak Company
Howell Allen Hammond
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY