Patents by Inventor Youhei Oosumi

Youhei Oosumi 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).

  • PROCESS FOR PRODUCING POLYIMIDE FILM, POLYIMIDE FILM AND LAMINATE COMPRISING THE SAME
    Publication number: 20130136934
    Abstract: The present invention relates to a polyimide film prepared from a tetracarboxylic acid component and a diamine component, wherein the strength of orientation anisotropy in the film length of 2000 mm is 1.2 or less and/or the strength of orientation anisotropy in the film length of 1800 mm is 1.1 or less.
    Type: Application
    Filed: May 19, 2011
    Publication date: May 30, 2013
    Applicant: UBE INDUSTRIES, LTD.
    Inventors: Hideki Iwai, Jin Kobayashi, Youhei Oosumi, Tatsushi Nakayama