Patents by Inventor Yasuda Shoji

Yasuda Shoji 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).

  • Silver halide photographic material
    Patent number: 5230983
    Abstract: A negative-working type silver halide photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer containing a hydrazine derivative, wherein the emulsion layer or another hydrophilic colloidal layer provided on the support contains at least one redox compound capable of releasing a development inhibitor upon oxidation, and the silver halide emulsion comprises of monodispersed silver halide grains comprising 50 mol % or more of silver chloride.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: July 27, 1993
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Inoue Nobuaki, Sakai Minoru, Yasuda Shoji