Patents by Inventor Gerald Karich

Gerald Karich has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Color photographic material with polyester oil former
    Patent number: 5043255
    Abstract: A color photographic recording material comprising a support and at least one photosensitive silver halide emulsion layer, with which a yellow coupler of the pivaloyl or benzoyl acetanilide type dissolved in a polymeric ester of aromatic or aliphatic dicarboxylic acids is associated, is distinguished by greater color purity and better dark-fading stability.
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: August 27, 1991
    Assignee: Agfa Aktiengesellschaft AG
    Inventors: Gunter Junkers, Klaus Wagner, Gerald Karich, Friedhelm Sommer