Patents by Inventor George W. Beebe

George W. Beebe 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).

  • Stabilization of silver halide emulsions
    Patent number: 4430426
    Abstract: Silver halide emulsions lack stability in that their properties vary over a period of time. Various stabilizers have been used to reduce the rate and degree of variation. The combination of uracils and nitroso-substituted phenols has been found to provide a synergistic stabilization of speed in silver halide emulsions. Other stabilizers may be combined with those two classes to further improve the stability of the emulsion.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: February 7, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: George W. Beebe, Philip Hine, Nelson B. O'Bryan, Steven M. Shor
  • Tannable imaging element
    Patent number: 4427757
    Abstract: A tannable photographic element and method therefore, the element comprising a uniquely treated opaque, translucent, or transparent base support and having at least one pigment in reactive association with the silver halide emulsion layer is useful in the graphic arts. The base support comprises an extremely thin gelatin subbing layer substantially free of hardener, or no subbing at all, on a primed base support.
    Type: Grant
    Filed: May 18, 1983
    Date of Patent: January 24, 1984
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: George W. Beebe, Michael T. Macioch