Patents by Inventor Gareth B. Evans

Gareth B. Evans 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).

  • Method of photographic processing
    Patent number: 5246822
    Abstract: The present invention is directed to a method of processing imagewise exposed photographic color silver halide materials in which, after the dye image is formed, the photographic material is treated with an aqueous stabilizing solution containing iodide ions but no fixing agent.
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: September 21, 1993
    Assignee: Eastman Kodak Company
    Inventors: Gareth B. Evans, John R. Fyson, Peter D. Marsden
  • Hydrazide compositions, methods employing them and photographic materials containing them
    Patent number: 4416969
    Abstract: A nucleating agent composition is described comprising a triazole substituted phenylhydrazide and an thiourea substituted phenylhydrazide wherein the molar ratio of the triazole substituted phenylhydrazide to the thiourea substituted phenylhydrazide is between 1:20 and 20:1. The described composition is useful in photographic emulsions, processing compositions and elements and provides excellent nucleation at low concentrations under a variety of processing conditions.
    Type: Grant
    Filed: September 1, 1982
    Date of Patent: November 22, 1983
    Assignee: Eastman Kodak Company
    Inventors: Paul M. Magee, Gareth B. Evans