Donald P. Wrathall

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Rochester, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Control of methionine content in photographic grade gelatin
- Patent number 5,412,075
- Issue date May 2, 1995
- Eastman Kodak Company
- Donald P. Wrathall
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Acyl hydrazino thiourea derivatives as photographic nucleating agents
- Patent number 4,031,127
- Issue date Jun 21, 1977
- Eastman Kodak Company
- Ronald E. Leone
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photographic compositions and elements including internal latent im...
- Patent number 4,030,925
- Issue date Jun 21, 1977
- Eastman Kodak Company
- Ronald E. Leone
- C07 - ORGANIC CHEMISTRY