Patents by Inventor James T. Kofron

James T. Kofron 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 silver halide emulsion layer of low developability and having an associated high dye-yield coupler
    Patent number: 5998121
    Abstract: The photographic element of the invention provides a support bearing at least one photographic silver halide emulsion exhibiting low developability and having associated therewith at least one high dye-yield coupler that releases a dye or dye precursor having an electrically neutral dye chromophore. The invention also encompasses a process for forming an image in an element in accordance with the invention.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: December 7, 1999
    Assignee: Eastman Kodak Company
    Inventors: David T. Southby, James T. Kofron, Robert J. Newmiller
  • Blue sensitized tabular emulsions for inverted record order film
    Patent number: 5601967
    Abstract: The invention is generally accomplished by providing an inverted order film in which the lowermost light sensitive layer is a blue-sensitive layer of blue-sensitized tabular grains. The blue-sensitized tabular grains are preferably sensitized to a wavelength of between 450 and 520 nm.
    Type: Grant
    Filed: February 19, 1991
    Date of Patent: February 11, 1997
    Assignee: Eastman Kodak Company
    Inventors: Thomas B. Brust, James T. Kofron
  • Color photographic recording material
    Patent number: 5322766
    Abstract: A color negative photographic recording material is described in which low emulsion coverage tabular grain silver halide emulsion imaging units are employed. The silver halide emulsion in at least one of the units comprises grains having a tabularity of between about 50 and 25,000. The imaging unit thickness is less than about 4.0 .mu.m, using a total of no more than 2.0 parts by weight of silver per part of coupler. The imaging unit yields a density of at least 2.0 when exposed and processed.
    Type: Grant
    Filed: January 19, 1993
    Date of Patent: June 21, 1994
    Assignee: Eastman Kodak Company
    Inventors: Allan F. Sowinski, George F. Wu, Thomas B. Brust, James T. Kofron, Gary L. House
  • Color photographic recording material and process
    Patent number: 5219715
    Abstract: A color negative photographic recording material is described in which low emulsion coverage tabular grain silver halide emulsion imaging units are employed. The silver halide emulsion in at least one of the units comprises grains having a tabularity of between about 50 and 25,000. The imaging unit thickness is less than about 4.0 .mu.m, using a total of no more than 2.0 parts by weight of silver per part of coupler. The imaging unit yields a density of at least 2.0 when exposed and processed.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: June 15, 1993
    Assignee: Eastman Kodak Company
    Inventors: Allan F. Sowinski, George F. Wu, Thomas B. Brust, James T. Kofron, Gary L. House
  • Sensitized high aspect ratio silver halide emulsions and photographic elements
    Patent number: 4439520
    Abstract: High aspect ratio chemically and spectrally sensitized tabular grain silver halide emulsions, photographic elements incorporating these emulsions, and processes for the use of the photographic elements are disclosed. In the tabular grain emulsions the silver halide grains having a thickness of less than 0.3 micron and a diameter of at least 0.6 micron have a high aspect ratio and account for at least 50 percent of the total projected area of the silver halide grains present.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: March 27, 1984
    Assignee: Eastman Kodak Company
    Inventors: James T. Kofron, Robert E. Booms, Cynthia G. Jones, John A. Haefner, Herbert S. Wilgus, Francis J. Evans