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Peter K. Sysak
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Wilmington, DE, US
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last 30 patents
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Patent Grant
Powdered packaged developer
Patent number
4,816,384
Issue date
Mar 28, 1989
E. I. Du Pont de Nemours and Company
Daniel R. Fruge
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Ionic copolymers in photographic light-sensitive silver halide films
Patent number
4,391,903
Issue date
Jul 5, 1983
E. I. Du Pont de Nemours & Co.
Peter K. Sysak
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photoimaging compositions containing substituted cyclohexadienone c...
Patent number
4,341,860
Issue date
Jul 27, 1982
E. I. Du Pont de Nemours and Company
Peter K. Sysak
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Bis(substituted amino)sulfides as reversible inhibitor sources for...
Patent number
4,168,981
Issue date
Sep 25, 1979
E. I. Du Pont de Nemours and Company
Dennis S. Donald
C07 - ORGANIC CHEMISTRY