Patents by Inventor Tomomitsu SEKITANI

Tomomitsu SEKITANI 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).

  • Polypropylene-based resin composition and molded article made thereof
    Patent number: 9969869
    Abstract: A polypropylene-based resin composition capable of affording a molded article superior in tensile elongation at break includes a polypropylene resin (A), an ethylene-?-olefin copolymer (B) having a density of 0.865 to 0.890 g/cm3, an ethylene-?-olefin copolymer (C) having a density of 0.855 to 0.859 g/cm3, and an inorganic filler (D), wherein the content of the polypropylene resin (A) is 49 to 76% by weight, the content of the inorganic filler (D) is 9 to 22% by weight, the sum total of the contents of the ethylene-?-olefin copolymer (B) and the ethylene-?-olefin copolymer (C) is 15 to 29% by weight. The sum total of the contents of (A), (B), (C), and (D) is taken as 100% by weight, and the content of the ethylene-?-olefin copolymer (B), x % by weight, and the content of the ethylene-?-olefin copolymer (C), y % by weight, satisfy the formula: 0.07?x/(x+y)?0.41.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: May 15, 2018
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Taro Miyazawa, Susumu Kanzaki, Tomomitsu Sekitani
  • POLYPROPYLENE-BASED RESIN COMPOSITION AND MOLDED ARTICLE MADE THEREOF
    Publication number: 20140073730
    Abstract: A polypropylene-based resin composition capable of affording a molded article superior in tensile elongation at break includes a polypropylene resin (A), an ethylene-?-olefin copolymer (B) having a density of 0.865 to 0.890 g/cm3, an ethylene-?-olefin copolymer (C) having a density of 0.855 to 0.859 g/cm3, and an inorganic filler (D), wherein the content of the polypropylene resin (A) is 49 to 76% by weight, the content of the inorganic filler (D) is 9 to 22% by weight, the sum total of the contents of the ethylene-?-olefin copolymer (B) and the ethylene-?-olefin copolymer (C) is 15 to 29% by weight. The sum total of the contents of (A), (B), (C), and (D) is taken as 100% by weight, and the content of the ethylene-?-olefin copolymer (B), x % by weight, and the content of the ethylene-?-olefin copolymer (C), y % by weight, satisfy the formula: 0.07?x/(x+y)?0.41.
    Type: Application
    Filed: September 11, 2013
    Publication date: March 13, 2014
    Inventors: Taro MIYAZAWA, Susumu KANZAKI, Tomomitsu SEKITANI