Patents by Inventor Sachio Hotta

Sachio Hotta 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 foam sheet
    Patent number: 9505894
    Abstract: Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced and includes (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: November 29, 2016
    Assignee: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Sachio Hotta, Kazuo Asuka, Shinichi Kitade, Kuninori Takahashi, Iku Kouzai, Takao Tayano
  • Polypropylene-based resin composition and foam sheet
    Patent number: 9284427
    Abstract: Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced. A polypropylene-based resin composition comprising (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: March 15, 2016
    Assignee: Japan Polypropylene Corporation
    Inventors: Sachio Hotta, Kazuo Asuka, Shinichi Kitade, Kuninori Takahashi, Iku Kouzai, Takao Tayano
  • POLYPROPYLENE-BASED RESIN COMPOSITION AND FOAM SHEET
    Publication number: 20150010747
    Abstract: Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced. A polypropylene-based resin composition comprising (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer, said resin (X) having properties (X-i) to (X-iv) and said block copolymer (Y) having properties (Y-i) to (Y-v), and the like.
    Type: Application
    Filed: February 22, 2013
    Publication date: January 8, 2015
    Applicant: Japan Polypropylene Corporation
    Inventors: Sachio Hotta, Kazuo Asuka, Shinichi Kitade, Kuninori Takahashi, Iku Kouzai, Takao Tayano
  • POLYPROPYLENE-BASED RESIN COMPOSITION AND FOAM SHEET
    Publication number: 20150004394
    Abstract: Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced. A polypropylene-based resin composition comprising (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer, said resin (X) having properties (X-i) to (X-iv) and said block copolymer (Y) having properties (Y-i) to (Y-v), and the like.
    Type: Application
    Filed: February 22, 2013
    Publication date: January 1, 2015
    Applicant: JAPAN POLYPROPYLENE CORPORATION
    Inventors: Sachio Hotta, Kazuo Asuka, Shinichi Kitade, Kuninori Takahashi, Iku Kouzai, Takao Tayano