Patents by Inventor Gerald J. Brien

Gerald J. Brien 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 bleaching compositions
    Patent number: 4454224
    Abstract: Fast acting and ecologically advantageous compositions for the bleaching of photographically developed silver are comprised of a peroxy compound, a buffering agent, and an aminopolyacetic or thiopolyacetic acid which contains at least three carboxyl groups.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: June 12, 1984
    Assignee: Eastman Kodak Company
    Inventors: Gerald J. Brien, Jeffrey L. Hall