Patents by Inventor Shinichi Katsura

Shinichi Katsura 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).

  • Optical apparatus for controlling angle of divergence of ring beam
    Patent number: 5764828
    Abstract: An optical apparatus for controlling an angle of divergence of a ring beam which is capable of irradiating a ringed light beam having a uniform distribution of light intensity with an arbitrary angle of divergence with respect to the optical axis in the direction of 360.degree. concurrently. The optical apparatus comprises parallel beam generating means (2) to which a light beam (L1) output from a light source (1) is input and which outputs the incident light (L2) by transforming it into a parallel light beam (L3); ring beam generating means (3) to which the parallel beam (L3) output from the parallel beam generating means (2) is input and which outputs the input light (L4) by transforming it into a ringed light beam (L5) whose shape is annular when irradiated to an imaginary plane perpendicular to an optical axis (A--A); and divergent angle changing means (4) for changing an angle of divergence (.theta.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: June 9, 1998
    Assignee: Kawaguchi Kogaku Sangyo
    Inventors: Kenichi Iga, Shinichi Katsura, Yuzo Kawaguchi
  • Heat-sensitive recording paper
    Patent number: 4894359
    Abstract: The present invention provides a novel bis(phenoxymethyl)benzene derivative or bis(naphthoxymethyl)benzene derivative, which improves the stability of image on a heat sensitive recording paper composed of a leuco dye and a developer.
    Type: Grant
    Filed: May 31, 1988
    Date of Patent: January 16, 1990
    Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo
    Inventors: Ryuzo Ueno, Shinichi Katsura, Yoshirou Uchiyama, Satomi Inoue
  • New compounds and their application
    Patent number: 4855482
    Abstract: The present invention provides a novel bis(phenoxymethyl)benzene derivative or bis(naphthoxymethyl)benzene derivative, which improves the stability of image on a heat sensitive recording paper composed of a leuco dye and a developer.
    Type: Grant
    Filed: June 26, 1987
    Date of Patent: August 8, 1989
    Assignee: Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo
    Inventors: Ryuzo Ueno, Shinichi Katsura, Yoshirou Uchiyama, Satomi Inoue