Howell Allen Hammond

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Rochester, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Blocked pyrazolone magenta dye-forming couplers
- Patent number T101004
- Issue date Sep 1, 1981
- Thomas E. Gompf
- 548 - Organic compounds
Information 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
Information 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