Patents by Inventor Dewey R. Fujii

Dewey R. Fujii 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).

  • Odorless fixing solution
    Patent number: 5932400
    Abstract: The present invention provides an odorless fixing composition for fixing silver halide photographic media. The composition includes ammonium thiosulfate as a halide solubilizing agent and a non-volatile organic acid for pH buffering. Preferably, the acid is glycolic acid, succinic acid, or a derivative thereof. In addition, the present invention provides a method for fixing silver halide photographic media by exposing the developed media to the odorless fixer composition.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: August 3, 1999
    Assignee: Varichem Corporation
    Inventors: Gary Fujii, Dewey R. Fujii