Patents by Inventor Stuart Terrance Gordon

Stuart Terrance Gordon 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).

  • Sulfo-substituted carboxylates as buffers for photographic bleaches and bleach-fixes
    Patent number: 5783376
    Abstract: A composition for bleaching or bleach-fixing a silver halide photographic material has a pH of from 2 to 9. The composition comprises a bleaching agent which is either a persulfate or polyvalent metal complex of an aminopolycarboxylic acid, and from 0.01 to 2M of a sulfo-substituted carboxylate represented by Formula I(MO.sub.3 S).sub.n --R--(COOM).sub.m (I)wherein R is a benzene ring or a straight, branched or cyclic saturated aliphatic group having 2 to 8 carbon atoms;M is hydrogen or an organic or inorganic cation; andn is 1 to 7;with the proviso that if R is an aliphatic group, m is 2 to 4 and m and n combined cannot equal more than the number of carbon atoms in R plus two, and if R is a benzene ring, m is 2 to 5 and m and n combined cannot equal more than six.
    Type: Grant
    Filed: May 14, 1997
    Date of Patent: July 21, 1998
    Assignee: Eastman Kodak Company
    Inventors: Stuart Terrance Gordon, John Michael Buchanan, Sidney Joseph Bertucci
  • Photographic processing solution containing ternary ferric-complex salts
    Patent number: 5670305
    Abstract: A composition for bleach-fixing a silver halide photographic element comprising a fixing agent and a ternary ferric-complex salt formed by a tetradentate ligand and a tridentate ligand and a method of bleach-fixing using said composition.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: September 23, 1997
    Assignee: Eastman Kodak Company
    Inventors: Stuart Terrance Gordon, Keith Henry Stephen, Eric Richard Brown, Celia Ann DeAndrea, Mary Morris Podhorecki, William George Henry