Patents by Inventor Kenji Takuwa

Kenji Takuwa 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).

  • Propylene polymer film
    Patent number: 5137955
    Abstract: A propylene polymer film is described which is composed of a composition comprising 100 parts by weight of a propylene polymer, 0.01 to 0.5 part by weight of a fine spherical silica particle and 0.3 to 5.0 parts by weight of hydroxy-fatty acid glyceride. A laminate film including a layer comprised of the above composition is also described. The film has an excellent transparency, gloss, slipperiness and adhesiveness, as well as a good adaptability to vacuum deposition.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: August 11, 1992
    Assignee: Toray Industries, Inc.
    Inventors: Katsuhiro Tsuchiya, Kenji Takuwa, Katsuya Ogawa
  • Propylene polymer film
    Patent number: 4966933
    Abstract: A propylene polymer film is described which is composed of a composition including 100 parts by weight of a propylene polymer, 0.01 to 0.5 parts by weight of a fine powder of a crosslinked silicone resin and 0.3 to 3.0 parts by weight of a hydroxy-fatty acid glyceride. A laminate film including a layer comprised of the above composition is also described. The film has an excellent transparency, gloss, slipperiness and adhesiveness, as well as a good adaptability to vacuum deposition.
    Type: Grant
    Filed: December 5, 1988
    Date of Patent: October 30, 1990
    Assignee: Toray Industries, Inc.
    Inventors: Ken-ichi Kawakami, Masatsugi Murakami, Kenji Takuwa