Patents by Inventor Joseph E. LaBarca

Joseph E. LaBarca 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 for use of light colored undeveloped photographic element
    Patent number: 5994050
    Abstract: The invention relates to a method of improved burning and dodging comprising providing a color photographic element that prior to development has CIELAB coordinates such that L* is greater than 71, exposing said paper, wherein during exposure burning and dodging is carried out.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: November 30, 1999
    Assignee: Eastman Kodak Company
    Inventors: Roupen H. Maronian, Donald R. Diehl, Pamela M. Ferguson, Joseph E. LaBarca
  • Color correcting layers consisting essentially of at least one dye-forming coupler and gelatin in chromogenic black-and-white photographic imaging systems
    Patent number: 5364747
    Abstract: The invention is accomplished by forming balanced cyan, magenta, and yellow coupler and emulsion mixes. There is at least one layer in which silver halide emulsion has been sensitized to blue light or silver halide emulsion sensitive to green light. Regardless of the color sensitivity of the silver halide layer that contains silver contains a mix of cyan, magenta, and yellow dye-forming couplers. Further, in order to have a black-and-white image that has a lightness such as observed by the human eye in a scene, it is preferred that the ratios of red sensitive emulsion to green sensitive emulsion to blue sensitive emulsion in the photographic element is about 2:3:1.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: November 15, 1994
    Assignee: Eastman Kodak Company
    Inventors: James L. Edwards, Paul T. Hahm, Joseph E. LaBarca
  • Chromogenic black-and-white photographic imaging systems
    Patent number: 5362616
    Abstract: The invention is accomplished by forming balanced cyan, magenta, and yellow coupler and emulsion mixes. There is at least one layer in which silver halide emulsion has been sensitized to blue light or silver halide emulsion sensitive to green light. Regardless of the color sensitivity of the silver halide layer that contains silver contains a mix of cyan, magenta, and yellow dye-forming couplers. Further, in order to have a black-and-white image that has a lightness such as observed by the human eye in a scene, it is preferred that the ratios of red sensitive emulsion to green sensitive emulsion to blue sensitive emulsion in the photographic element is about 2:3:1.
    Type: Grant
    Filed: November 25, 1992
    Date of Patent: November 8, 1994
    Assignee: Eastman Kodak Company
    Inventors: James L. Edwards, Paul T. Hahm, Mitchell J. Bogdanowicz, Joseph E. LaBarca