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Karl E. Wiegers
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Rochester, NY, US
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last 30 patents
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Patent Grant
Photographic compositions and elements including internal latent im...
Patent number
4,737,439
Issue date
Apr 12, 1988
Eastman Kodak Company
John P. Freeman
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Adsorbable alkynyl substituted heterocyclic quaternary ammonium sal...
Patent number
T105001
Issue date
Jan 1, 1985
Richard L. Parton
430 - Radiation imagery chemistry: process, composition, or product thereof
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Patent Grant
Application of activated arylhydrazides to silver halide photography
Patent number
4,478,928
Issue date
Oct 23, 1984
Eastman Kodak Company
Thomas C. Hess
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Silver halide emulsions and photographic elements containing adsorb...
Patent number
4,471,044
Issue date
Sep 11, 1984
Eastman Kodak Company
Richard L. Parton
C07 - ORGANIC CHEMISTRY