Patents Represented by Attorney H. E. Cole

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  • Photographic element having overcoating of ionic polyester in hydrophilic colloid
    Patent number: 4298682
    Abstract: Two-sheet diffusion transfer assemblages, photographic elements and dye image-receiving elements are described wherein an overcoat layer is present on the photographic element or the dye image-receiving element superposed thereon. The overcoat layer comprises either silica or an ionic polyester in a hydrophilic colloid which prevents spontaneous delamination during the lamination period, yet permits satisfactory peel-apart afterwards.
    Type: Grant
    Filed: August 1, 1980
    Date of Patent: November 3, 1981
    Assignee: Eastman Kodak Company
    Inventor: John F. Bishop
  • Two-sheet diffusion transfer assemblages and photographic elements
    Patent number: 4296195
    Abstract: Two-sheet diffusion transfer assemblages and photographic elements are described which contain a primer layer located between a polymeric acid layer and a timing layer. The primer layer prevents unwanted transfer of portions of the emulsion layer to the receiver when the receiver and photographic element are peeled apart. The primer layer comprises:(a) a mixture of gelatin and cellulose nitrate, or(b) a mixture of an acrylic acid copolymer and a particular acrylic acid terpolymer, or(c) an acrylic acid copolymer as described herein.
    Type: Grant
    Filed: August 1, 1980
    Date of Patent: October 20, 1981
    Assignee: Eastman Kodak Company
    Inventors: John F. Bishop, Wayne A. Bowman
  • Process of eliminating cracking in the coating of TiO.sub.2 layers
    Patent number: 4179538
    Abstract: A process for eliminating cracking in a titanium dioxide-hydroxyethylcellulose layer by simultaneously coating thereover a hydrophilic colloid layer such as gelatin.
    Type: Grant
    Filed: September 6, 1977
    Date of Patent: December 18, 1979
    Assignee: Eastman Kodak Company
    Inventor: Herbert R. Sassenhausen
  • Auxiliary mordant layer for excess dye formed in integral color transfer assemblage
    Patent number: 3930864
    Abstract: Excessive image density produced during or after processing by dye diffusing from the image generating unit into the dye image-receiving layer of an integral color transfer assemblage is controlled by incorporating into the assemblage a scavenger layer capable of immobilizing byproducts of processing reactions which may affect image quality in the image-receiving layer.
    Type: Grant
    Filed: April 15, 1974
    Date of Patent: January 6, 1976
    Assignee: Eastman Kodak Company
    Inventors: Edward P. Abel, Richard W. Becker