Patents by Inventor Tadahiro Nagasawa

Tadahiro Nagasawa 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).

  • Patent number: 7309868
    Abstract: An object is to provide a radiation image conversion panel minimizing deterioration of sensitivity and sharpness due to improved moisture resistance, as well as a method of preparing a radiation image conversion panel exhibiting high production efficiency. Also disclosed is a radiation image conversion panel possessing a support having thereon at least a stimulable phosphor layer, wherein an average height of burr generated on the radiation image conversion panel is 1-400 ?m.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: December 18, 2007
    Assignee: Konica Minolta Medical and Graphic, Inc.
    Inventors: Katsuya Kishinami, Tadahiro Nagasawa
  • Publication number: 20070045565
    Abstract: An object is to provide a radiation image conversion panel minimizing deterioration of sensitivity and sharpness due to improved moisture resistance, as well as a method of preparing a radiation image conversion panel exhibiting high production efficiency. Also disclosed is a radiation image conversion panel possessing a support having thereon at least a stimulable phosphor layer, wherein an average height of burr generated on the radiation image conversion panel is 1-400 ?m.
    Type: Application
    Filed: August 17, 2006
    Publication date: March 1, 2007
    Inventors: Katsuya Kishinami, Tadahiro Nagasawa
  • Patent number: 7182981
    Abstract: To provide a cellulose ester film formed by casting, which minimizes degradation of optical properties as well as exhibits sufficient mechanical strength generated by the enhancement of tear strength, and further to provide a production method of the same. A cellulose ester film characterized in comprising flat particles.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: February 27, 2007
    Assignee: Konica Corporation
    Inventors: Noriki Tachibana, Masahito Takada, Yasuo Shimura, Tadahiro Nagasawa
  • Patent number: 6593071
    Abstract: A silver halide emulsion is disclosed, comprising tabular grains having dislocation lines in the fringe portion, the tabular grains comprising a silver halide phase (V3) having a maximum iodide content, a silver halide phase (V6), internal to V3, having an average iodide content of A6 mol %, and a silver halide phase (V7), external to V3, having an average iodide content of A7 mol %, and 0≦A6/A7≦1.0; and wherein the dislocation line forming region comprises a shell accounting for 10 to 50% by volume of the grain and having an average iodide content of 4 to 20 mol %; the shell comprising an outermost sub-shell accounting for to 15% by volume of the grain and having an average iodide content of 0 to 3 mol %.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: July 15, 2003
    Assignee: Konica Corporation
    Inventors: Toshiya Kondo, Tadahiro Nagasawa, Kuniaki Uezawa
  • Publication number: 20020061478
    Abstract: A silver halide emulsion is disclosed, comprising tabular grains having dislocation lines in the fringe portion, the tabular grains comprising a silver halide phase (V3) having a maximum iodide content, a silver halide phase (V6), internal to V3, having an average iodide content of A6 mol %, and a silver halide phase (V7), external to V3, having an average iodide content of A7 mol %, and 0≦A6/A7≦1.0; and wherein the dislocation line forming region comprises a shell accounting for 10 to 50% by volume of the grain and having an average iodide content of 4 to 20 mol %; the shell comprising an outermost sub-shell accounting for to 15% by volume of the grain and having an average iodide content of 0 to 3 mol %.
    Type: Application
    Filed: September 14, 2001
    Publication date: May 23, 2002
    Inventors: Toshiya Kondo, Tadahiro Nagasawa, Kuniaki Uezawa
  • Patent number: 6287755
    Abstract: A thermally developable photosensitive material comprising photosensitive silver halide grains, an organic silver salt, a reducing agent and a binder, characterized in that a dispersibility ((standard deviation of circle equivalent diameter of cell)/(average value); cell centering each grain is obtained by processing an electron microscope image employing an extension method) of said photosensitive silver halide grains having grain size of not less than 0.02 &mgr;m, measured from an expopsing side of said thermally developable photosensitive material, is not more than 80%.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: September 11, 2001
    Assignee: Konica Corporation
    Inventors: Tetsuo Shima, Tadahiro Nagasawa
  • Patent number: 6284449
    Abstract: A silver halide emulsion comprising silver halide grains is disclosed, in which at least 50% of total grain projected area is accounted for by silver halide regular crystal grains exhibiting a proportion of a (100) face per grain of not less than 50% and having an average iodide content of not more than 5 mol %; the silver halide grains having an internal high iodide phase having an average iodide content of not less than 7 mol % and accounting for 0.1 to 15% of the grain volume; the high iodide phase being in the region at a depth of from 7 to 27% from the (100) face, based on the distance between the center of a grain and the (100) face.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: September 4, 2001
    Assignee: Konica Corporation
    Inventors: Tomoyuki Nakayama, Tadahiro Nagasawa, Rieko Ren