Patents by Inventor Gary M. Einhaus

Gary M. Einhaus 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).

  • Enhanced bleaching of photographic elements containing silver halide and adsorbed dye
    Patent number: 4552834
    Abstract: The bleaching from photographic elements of silver produced by the development of silver halide having a dye adsorbed to its surface by employing as a bleaching agent a ferric complex of a polycarboxylic acid is improved by the presence of a compound of the formula: ##STR1## wherein Ar is an aromatic linking group,R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are hydroxy substituted lower alkyl groups,R.sup.5 and R.sup.6 are lower alkanediyl groups,X is a charge balancing counter ion,x and y are 0 or 1, andz is 0, 1, or 2.
    Type: Grant
    Filed: March 28, 1985
    Date of Patent: November 12, 1985
    Assignee: Eastman Kodak Company
    Inventors: Philip T. S. Lau, Gary M. Einhaus