Patents by Inventor Masato Shintaku

Masato Shintaku 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).

  • Retardation film and production method thereof
    Patent number: 8697201
    Abstract: The present invention is to provide a retardation film having excellent durability against temperature change or the like and a production method of the retardation film. Particularly, the present invention is to provide a retardation film which realizes both reverse wavelength dispersion and durability and a production method of the retardation film. This is achieved by a retardation film including: a component (A) which is specific cellulose acylate; and a component (B) which is cellulose acylate or cellulose ether having a molecular weight different from a molecular weight of the component (A) and whose residual degree of hydroxyl group is 0.30 or more.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: April 15, 2014
    Assignee: Kaneka Corporation
    Inventors: Yoshikazu Kawai, Masato Shintaku, Masaaki Nakamura
  • RETARDATION OF FILM AND PRODUCTION METHOD THEREOF
    Publication number: 20090273837
    Abstract: The present invention is to provide a retardation film having excellent durability against temperature change or the like and a production method of the retardation film. Particularly, the present invention is to provide a retardation film which realizes both reverse wavelength dispersion and durability and a production method of the retardation film. This is achieved by a retardation film including: a component (A) which is specific cellulose acylate; and a component (B) which is cellulose acylate or cellulose ether having a molecular weight different from a molecular weight of the component (A) and whose residual degree of hydroxyl group is 0.30 or more.
    Type: Application
    Filed: March 28, 2006
    Publication date: November 5, 2009
    Applicant: KANEKA CORPORATION
    Inventors: Yoshikazu Kawai, Masato Shintaku, Masaaki Nakamura