Patents by Inventor Erika M. Sato

Erika M. Sato 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 element with color enhancing layer adjacent to an emulsion layer and an oxidized developer scavenger layer
    Patent number: 5576159
    Abstract: The invention relates to a photographic element comprising at least one emulsion layer comprising coupler and silver halide grains, adjacent to said at least one emulsion layer a color enhancer layer comprising the same coupler as in said at least one coupler layer and adjacent to said color enhancer layer a Dox scavenging layer.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: November 19, 1996
    Assignee: Eastman Kodak Company
    Inventors: Erika M. Sato, Paul T. Hahm, Walter H. Isaac
  • Photographic paper
    Patent number: 5300415
    Abstract: The invention provides a photographic element comprising a paper substrate with a polyolefin coating provided on at least one surface, a hydrophilic colloid layer on the polyolefin coating, and at least one light sensitive silver halide emulsion above the hydrophilic colloid layer, wherein said hydrophilic colloid layer comprises a removable antihalation material and from about 20 to 80 percent by weight of a white pigment, and from about 15 to 35 percent by weight of hollow microspheres having a diameter of from about 0.1 to about 1 um.
    Type: Grant
    Filed: July 15, 1993
    Date of Patent: April 5, 1994
    Assignee: Eastman Kodak Company
    Inventors: Erika M. Sato, Peter D. Marsden
  • Photographic paper
    Patent number: 5252424
    Abstract: The invention provides a photographic element comprising a paper substrate with a polyolefin coating provided on at least one surface, a hydrophilic colloid layer on the polyolefin coating, and at least one light sensitive silver halide emulsion above the hydrophilic colloid layer, wherein said hydrophilic colloid layer comprises a removable antihalation material and from about 20 to 80 percent by weight of a white pigment, and from about 15 to 35 percent by weight of hollow microspheres having a diameter of from about 0.1 to about 1 .mu.m.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: October 12, 1993
    Assignee: Eastman Kodak Company
    Inventors: Erika M. Sato, Peter D. Marsden
  • Photographic paper support with silver halide emulsion layer
    Patent number: 5234804
    Abstract: A photographic element comprising a paper substrate said paper substrate comprises wood fiber and polyvinyl alcohol polymer located in heavier concentration near the surface of said paper with a polyolefin coating provided on at least one surface, a hydrophilic colloid layer on the polyolefin coating and a light sensitive silver halide emulsion on the hydrophilic colloid layer, said hydrophilic colloid layer comprising from about 20 to 80 percent by weight of a white pigment, and from about 15 to 35 percent by weight of hollow microspheres having a diameter of from about 0.1 to about 1 .mu.m.
    Type: Grant
    Filed: September 4, 1992
    Date of Patent: August 10, 1993
    Assignee: Eastman Kodak Company
    Inventors: Erika M. Sato, James L. Edwards, Larry D. Hagemeier, David J. Lacz