Patents by Inventor Yohei Higuchi

Yohei Higuchi 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).

  • POLYIMIDE FILM, AND PROCESS FOR PRODUCING POLYIMIDE FILM
    Publication number: 20130011651
    Abstract: The present invention relates to a polyimide film which is obtained by the reaction of a tetracarboxylic acid component and a diamine component and has an orientation anisotropy, in which the variations in the orientation angle in the width direction are within ±10°.
    Type: Application
    Filed: March 25, 2011
    Publication date: January 10, 2013
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Nobu Iizumi, Takao Miyamoto, Yohei Higuchi
  • PROCESS AND EQUIPMENT FOR PRODUCTION OF POLYIMIDE FILM
    Publication number: 20120292800
    Abstract: Provided are a method and apparatus for the production of a polyimide film, which allow a polyimide film having physical properties with in-plane uniformity to be produced with high productivity. In the method for the production of a polyimide film, a solvent content of a self-supporting film is measured by infrared spectroscopy, and based on the measurement result, one or more kinds selected from a drying condition of a cast of a polyimide precursor solution, a post-heating condition of the self-supporting film, and an amount of extrusion of a polyimide precursor solution from a die are controlled.
    Type: Application
    Filed: January 24, 2011
    Publication date: November 22, 2012
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Yohei Higuchi, Yasuhiro Nagoshi, Takeshi Uekido, Toshiyuki Nishino, Eiji Masui