Patents Assigned to Varichem Corporation
  • 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