Patents by Inventor Gerald L. Ducharme

Gerald L. Ducharme 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).

  • Subbing layer for dye-donor element used in thermal dye transfer
    Patent number: 4695288
    Abstract: A dye-donor element for thermal dye transfer comprising a poly(ethylene terephthalate) support having thereon, in order, a subbing layer and a dye layer comprising a dye dispersed in a cellulosic binder, and wherein said subbing layer comprises from about 5 to about 35 percent by weight of recurring units of an ethylenically unsaturated monomer, from about 0 to about 20 percent by weight of recurring units of an ethylenically unsaturated carboxylic acid, and from about 55 to about 85 percent by weight of recurring units of vinylidene chloride.
    Type: Grant
    Filed: October 7, 1986
    Date of Patent: September 22, 1987
    Assignee: Eastman Kodak Company
    Inventor: Gerald L. Ducharme
  • Coversheet for color transfer assemblages
    Patent number: 4357392
    Abstract: Photographic assemblages, elements, receiving elements and cover sheets comprise a combination of two timing layers and a neutralizing layer. The outermost timing layer contains photographic addenda, such as development inhibitors, for substantially terminating development of the silver halide emulsion. The timing layer next to the neutralizing layer has a much longer breakdown time so that it is permeated by the alkaline processing composition only after silver halide development has been substantially terminated.
    Type: Grant
    Filed: October 2, 1981
    Date of Patent: November 2, 1982
    Assignee: Eastman Kodak Company
    Inventors: Kenneth J. Reed, Patrick H. Saturno, Gerald L. Ducharme
  • Color transfers assemblages with two timing layers and a neutralizing layer
    Patent number: 4314020
    Abstract: Photographic assemblages, elements, receiving elements and cover sheets comprise a combination of two timing layers and a neutralizing layer. The outermost timing layer contains photographic addenda, such as development inhibitors, for substantially terminating development of the silver halide emulsion. The timing layer next to the neutralizing layer has a much longer breakdown time so that it is permeated by the alkaline processing composition only after silver halide development has been substantially terminated.
    Type: Grant
    Filed: August 4, 1980
    Date of Patent: February 2, 1982
    Assignee: Eastman Kodak Company
    Inventors: Kenneth J. Reed, Patrick H. Saturno, Gerald L. Ducharme