Patents by Inventor Alaine M. Gray

Alaine M. Gray 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).

  • Photographic processing using biodegradable bleaching agent followed by fixing
    Patent number: 6197483
    Abstract: Color photographic silver halide materials, especially color photographic papers, are processed effectively with reduced iron retention after bleaching with a biodegradable bleaching composition. Bleaching is accomplished using an iron chelate of a biodegradable chelating ligand in the presence of a polyphosphonic acid. This bleaching step is followed by fixing using a fixing composition that includes a fixing agent and a polycarboxylic acid.
    Type: Grant
    Filed: December 18, 1998
    Date of Patent: March 6, 2001
    Assignee: Eastman Kodak Company
    Inventors: Carl A. Marrese, Alaine M. Gray, David G. Foster