Patents by Inventor Noriyasu Kuzuhara

Noriyasu Kuzuhara 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 film and liquid crystal display using the same
    Patent number: 6503581
    Abstract: A film for a liquid crystal display comprising a fatty acid cellulose ester film having an acetyl group and a propionyl group is disclosed. The sum of degree of acetyl substitution (DSac) and degree of propionyl substitution (DSpr) of the fatty acid cellulose ester film of the film is 2.8 of less, and a retardation value (Rt value) in the thickness direction defined by Formula 1 is 60 to 300 nm.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: January 7, 2003
    Assignee: Konica Corporation
    Inventors: Toshiaki Shibue, Makoto Honda, Nobuo Kubo, Noriyasu Kuzuhara, Hiroki Umeda, Sota Kawakami, Takatoshi Yajima
  • Optical compensation sheet and liquid crystal display
    Publication number: 20020041352
    Abstract: An optical compensation film used for a liquid crystal display comprising a support and an optically anisotropic layer is disclosed. The optically anisotropic layer is a layer on which orientation of the liquid crystalline compound is fixed and the support is an optically biaxial cellulose ester film. A polarizing plate used for a liquid crystal display and a liquid crystal display employing the optical compensation film are also disclosed.
    Type: Application
    Filed: July 19, 2001
    Publication date: April 11, 2002
    Applicant: KONICA CORPORATION
    Inventors: Noriyasu Kuzuhara, Nobuo Kubo, Hiroki Umeda, Nobuyuki Takiyama, Takatoshi Yajima, Koji Tasaka
  • Method for determining total chlorine amount and a kit for determining total chlorine amount
    Patent number: 5972713
    Abstract: A method for determining total chlorine amount present in a sample by mixing the sample with a benzidine indicator solution comprising a benzidine compound capable of forming a dye by a reaction with a chlorine, wherein the hue of the formed dye changes depending upon the mole ratio of the chlorine to benzidine compound and determining the total chlorine amount from the hue. A kit for practicing the method incudes the indicator and a color scale for the hues of the dye.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: October 26, 1999
    Assignee: Konica Corporation
    Inventors: Noriyasu Kuzuhara, Minoru Takada, Masayuki Numa