Patents by Inventor Katsuya Yabuuchi

Katsuya Yabuuchi 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).

  • Silver halide emulsion and silver halide photographic material
    Patent number: 7157216
    Abstract: A silver halide emulsion is disclosed, comprising silver halide grains, wherein at least 50% by number of the silver halide grains is accounted for by cubic grains having a chloride content of not less than 90 mol %, an iodide content of from 0 to 2 mol % and a bromide content of from 0.1 to 10 mol % and containing dislocation lines in the edge region or the corner region of the grains.
    Type: Grant
    Filed: March 18, 2005
    Date of Patent: January 2, 2007
    Assignee: Konica Minolta Photo Imaging, Inc.
    Inventors: Toshiya Kondo, Katsuya Yabuuchi, Rieko Ren
  • Silver halide emulsion and silver halide photographic material
    Patent number: 7105287
    Abstract: A silver halide emulsion is disclose, containing silver halide grains, in which at least 50% by number of the silver halide grains is accounted for by (1) cubic grains (2) having a chloride content of not less than 90 mol %, (3) an iodide content of from 0 to 2 mol % and (4) a bromide content of from 0.1 to 10 mol %, and (5) containing dislocation lines in the peripheral region and (6) having rounded corners.
    Type: Grant
    Filed: February 15, 2005
    Date of Patent: September 12, 2006
    Assignee: Konica Minolta Photo Imaging, Inc.
    Inventors: Toshiya Kondo, Katsuya Yabuuchi, Rieko Ren
  • Silver halide emulsion and silver halide photographic material
    Publication number: 20060024625
    Abstract: A silver halide emulsion is disclosed, comprising silver halide grains, wherein at least 50% by number of the silver halide grains is accounted for by grains having an aspect ratio of less than 1.3, and the silver halide grains have an average chloride content of not less than 90 mol %, an average iodide content of from 0.02 to 2 mol % and an average bromide content of from 0.1 to 9 mol %, wherein the silver halide grains exhibit a coefficient of variation in iodide content among grains of less than 40%.
    Type: Application
    Filed: February 3, 2005
    Publication date: February 2, 2006
    Inventors: Toshiya Kondo, Katsuya Yabuuchi, Rieko Ren
  • Silver halide emulsion and silver halide photographic material
    Publication number: 20050208436
    Abstract: A silver halide emulsion is disclosed, comprising silver halide grains, wherein at least 50% by number of the silver halide grains is accounted for by cubic grains having a chloride content of not less than 90 mol %, an iodide content of from 0 to 2 mol % and a bromide content of from 0.1 to 10 mol % and containing dislocation lines in the edge region or the corner region of the grains.
    Type: Application
    Filed: March 18, 2005
    Publication date: September 22, 2005
    Inventors: Toshiya Kondo, Katsuya Yabuuchi, Rieko Ren
  • Silver halide emulsion and silver halide photographic material
    Publication number: 20050191587
    Abstract: A silver halide emulsion is disclose, containing silver halide grains, in which at least 50% by number of the silver halide grains is accounted for by (1) cubic grains (2) having a chloride content of not less than 90 mol %, (3) an iodide content of from 0 to 2 mol % and (4) a bromide content of from 0.1 to 10 mol %, and (5) containing dislocation lines in the peripheral region and (6) having rounded corners.
    Type: Application
    Filed: February 15, 2005
    Publication date: September 1, 2005
    Inventors: Toshiya Kondo, Katsuya Yabuuchi, Rieko Ren
  • Silver halide color photographic light sensitive material
    Patent number: 5945267
    Abstract: A silver halide color photographic light sensitive material is disclosed, comprising a support having thereon photographic component layers, at least one of the component layers containing a coupler represented by the following formula, and the photographic material having an overall silver potential of 50 to 120 mV.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: August 31, 1999
    Assignee: Konica Corporation
    Inventor: Katsuya Yabuuchi