Patents by Inventor Julie C. Bishop

Julie C. Bishop 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).

  • Ultrahigh contrast bright light films with rapid processing
    Patent number: 5607815
    Abstract: Disclosed are silver halide elements that contain an arylhydrazine compound useful in producing high contrast images. The elements can be handled in bright light room conditions for extended periods of time without increasing minimum density of the element.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: March 4, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Julie C. Bishop, John R. Shock
  • Process for rapid access development of silver halide films using pyridinium as development accelerators
    Patent number: 5384232
    Abstract: A process of developing exposed silver halide elements comprises developing said element in a developer in the presence of a development accelerator compound as defined. The development accelerator compounds include pyridinium, or pyridinium and and imidazolium compounds. The process is applicable to standard and hydrazine-containing films and to hydroquinone and/or ascorbic acid-based developers. The development accelerator may be incorporated into the developer or into the silver halide emulsion.
    Type: Grant
    Filed: March 30, 1993
    Date of Patent: January 24, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Julie C. Bishop, Dominic M. Chan, Dennis S. Donald, Ludovic Fodor, William R. Pangratz, Glenn M. Russo, John R. Shock