Patents by Inventor Shigeji Ichikawa

Shigeji Ichikawa 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).

  • Publication number: 20130261240
    Abstract: Provided is a polyurethane resin powder composition for slush molding from which an outer skin for an instrument panel can be produced, the outer skin not interfering with deployment of an airbag. More specifically, provided is a polyurethane resin powder composition (D) for slush molding comprising perfectly spherical thermoplastic polyurethane resin particles (A) obtained by reacting a polyester diol component (J) and a diisocyanate component (F), a plasticizer (B), and a vinyl-type copolymer fine particles (C) having a crosslinked structure, wherein the polyester diol component (J) comprises a polyester diol (J1) comprising an aromatic dicarboxylic acid (E) and ethylene glycol as essential constituent units, a ratio of volume average particle sizes of (A) and (C), (A):(C), is 200:1 to 2000:1, and an extent of surface coverage of a surface of (A) with (C) {Equation (1)} is 20 to 80%.
    Type: Application
    Filed: March 11, 2013
    Publication date: October 3, 2013
    Inventors: Shu Yasuhara, Yasuhiro Tsudo, Koichi Saito, Masaaki Namiki, Naohito Jinnai, Shigeji Ichikawa, Masaaki Tamura
  • Patent number: 5543454
    Abstract: A reinforced polypropylene resin composition contains the following components (A), (B) and (C) in amounts of 67 to 82% by weight of, 6 to 12% by weight and 12 to 21% by weight, respectively:Component (A): crystalline ethylene-propylene block copolymer having an ethylene content of 2 to 4% by weight, a molecular distribution of polypropylene component (Q=M.sub.w /M.sub.n) of at least 7, isotacticity of polypropylene component of at least 98%, an intrinsic viscosity (decalin, C.) of room temperature p-xylene soluble content of at least 6 dl/g, a melt flow rate (MFR) of 3 to 15 g/10 minutes, and the product of flexural modulus at room temperature and Izod impact strength at room temperature of at least 120000.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: August 6, 1996
    Assignees: Ube industries, Ltd., Kansei Corp.
    Inventors: Hikoichi Kamakura, Kiyoshi Tsutsui, Tomohiko Akagawa, Ikunori Sakai, Shigeji Ichikawa, Katsunori Arai
  • Patent number: 5286776
    Abstract: A reinforced polypropylene resin composition comprising the following components (a) to (e), the total amount of the components (b) and (c) being 2 to 14%:(a) 45 to 75% by weight of a polypropylene modified with an organosilane compound or an unsaturated acid, or a modified polypropylene containing an unmodified polypropylene;(b) 1 to 10% by weight of a noncrystalline ethylene-.alpha.-olefin copolymer;(c) 1 to 10% by weight of a styrenic hydrogenated block copolymer;(d) 2 to 12% by weight of a glass fiber having a mean fiber diameter of 4 to 15 .mu.m; and(e) 15 to 35% by weight of a hard mica having a tensile strength of 30 kg/mm.sup.2 or more, a mean particle diameter of 50 to 250 .mu.m and an aspect ratio of 15 to 80.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: February 15, 1994
    Assignees: Kanesi Corporation, Ube Industries, Ltd.
    Inventors: Shigeji Ichikawa, Katsunori Arai, Hideyo Morita, Kouhei Ueno, Tatsushi Akou