Patents by Inventor Yuta Kumano

Yuta Kumano 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).

  • Patent number: 5629371
    Abstract: Disclosed is a resin molding comprising a molding composed of a resin composition comprising 100 parts by weight of a substrate resin comprising 100 to 30% by weight of at least one propylene polymer selected from the group consisting of propylene/ethylene block copolymers having an ethylene content of 3 to 45% by weight and propylene/ethylene random copolymers having an ethylene content of 0.5 to 10% by weight and 0 to 70% by weight of an elastomer, and at least one member selected from the group consisting of (A) 0.01 to 10 parts by weight of a 1,3-diene polymer having at least one terminal hydroxyl group or a hydrogenation product thereof, (B) 0.01 to 40 parts by weight of a copolymer of ethylene with an unsaturated compound containing a carboxyl group (including an acid anhydride group) and (C) 0.
    Type: Grant
    Filed: October 19, 1993
    Date of Patent: May 13, 1997
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Sadao Kitagawa, Yuta Kumano
  • Patent number: 5321080
    Abstract: A resin composition comprising an olefin resin (A), a copolymer of olefin with non-conjugated diene (B) and at least one polymer (C) selected from the group consisting of the following polymers;C1: diene polymer containing a hydroxyl group or the hydrogenation product thereof,C2: polymer containing a hydroxyl group,C3: polymer containing a carboxyl group (including an acid anhydride group),C4: polymer containing an amino group and/or imino group, andC5: polymer containing an epoxy group; and optionally an elastomer (D), filler (E) and at least one compound (F) selected from the group consisting of the following compounds;F1: organotin compound,F2: tertiary amine compound, andF3: phosphorus oxy compound.The moldings prepared from this resin composition have remarkable adhesive properties for paints, adhesives and printing inks. Thus, paints, etc. may be applied directly to the moldings, without surface treatment or washing thereof.
    Type: Grant
    Filed: July 29, 1992
    Date of Patent: June 14, 1994
    Assignee: Mitsubishi Petrochemical Company, Ltd.
    Inventors: Yuta Kumano, Sadao Kitagawa, Mitsushige Baba, Shiroh Gotoh
  • Patent number: 5276093
    Abstract: Disclosed is a resin molding comprising a molding composed of a resin composition comprising 100 parts by weight of a substrate resin comprising 100 to 30% by weight of at least one propylene polymer selected from the group consisting of propylene/ethylene block copolymers having an ethylene content of 3 to 45% by weight and propylene/ethylene random copolymers having an ethylene content of 0.5 to 10% by weight and 0 to 70% by weight of an elastomer, and at least one member selected from the group consisting of (A) 0.01 to 10 parts by weight of a 1,3-diene polymer having at least one terminal hydroxyl group or a hydrogenation product thereof, (B) 0.01 to 40 parts by weight of a copolymer of ethylene with an unsaturated compound containing a carboxyl group (including an acid anhydride group) and (C) 0.
    Type: Grant
    Filed: January 31, 1992
    Date of Patent: January 4, 1994
    Assignee: Mitsubishi Petrochemical Company Limited
    Inventors: Sadao Kitagawa, Yuta Kumano
  • Patent number: 5196270
    Abstract: Disclosed is a coated resin molding comprising a molding composed of a resin composition comprising 100 parts by weight of a substrate resin comprising 100 to 30% by weight of at least one propylene polymer selected from the group consisting of propylene/ethylene block copolymers having an ethylene content of 3 to 45% by weight and propylene/ethylene random copolymers having an ethylene content of 0.5 to 10% by weight and 0 to 70% by weight of an elastomer, and at least one member selected from the group consisting of (A) 0.01 to 10 parts by weight of a 1,3-diene polymer having at least one terminal hydroxyl group or a hydrogenation product thereof, (B) 0.01 to 40 parts by weight of a copolymer of ethylene with an unsaturated compound containing a carboxyl group (including an acid anhydride group) and (C) 0.
    Type: Grant
    Filed: November 14, 1990
    Date of Patent: March 23, 1993
    Assignee: Mitsubishi Petrochemical Company Limited
    Inventors: Sadao Kitagawa, Yuta Kumano