Patents by Inventor Yukari Tamai

Yukari Tamai 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).

  • Polymer of 4-methylpentene-1
    Patent number: 5157092
    Abstract: A polymer of 4-methylpentene-1 having a substantially syndiotactic structure, which polymer contains 0 to 30 mol % of the .alpha.-olefin unit other than the 4-methylpentene-1 unit and has excellent physical properties.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: October 20, 1992
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tadashi Asanuma, Tetsunosuke Shiomura, Nobutaka Uchikawa, Yukari Tamai, Tateyo Sasaki, Tutomu Iwatani