Patents by Inventor Toshihide Nara

Toshihide Nara 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: 7763369
    Abstract: There is provided a resin composition for a fuel cell member which givens only a small amount of eluting ions. A resin composition for a fuel cell member is formed to include 60 to 85 wt % of the following polypropylene and 40 to 15 wt % of the following talc: (1) polypropylene that is homopolypropylene, blockpolypropylene or a blend of homopolypropylene and blockpolypropylene, and has a melt flow rate of 2 to 40 g/10 min.; (2) talc that has a whiteness degree of 96% or more, and an average particle diameter of 4 to 10 ?m.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: July 27, 2010
    Assignee: Prime Polymer Co., Ltd.
    Inventors: Toshihide Nara, Yukihiro Tsuchiya, Hidenori Ichikawa, Hiroyuki Muramatsu, Yutaka Atsumi
  • Publication number: 20090075126
    Abstract: There is provided a resin composition for a fuel cell member which givens only a small amount of eluting ions. A resin composition for a fuel cell member is formed to include 60 to 85 wt % of the following polypropylene and 40 to 15 wt % of the following talc: (1) polypropylene that is homopolypropylene, blockpolypropylene or a blend of homopolypropylene and blockpolypropylene, and has a melt flow rate of 2 to 40 g/10 min.; (2) talc that has a whiteness degree of 96% or more, and an average particle diameter of 4 to 10 ?m.
    Type: Application
    Filed: November 3, 2008
    Publication date: March 19, 2009
    Inventors: Toshihide Nara, Yukihiro Tsuchiya, Hidenori Ichikawa, Hiroyuki Muramatsu, Yutaka Atsumi
  • Publication number: 20070191528
    Abstract: There is provided a resin composition for a fuel cell member which givens only a small amount of eluting ions. A resin composition for a fuel cell member is formed to include 60 to 85 wt % of the following polypropylene and 40 to 15 wt % of the following talc: (1) polypropylene that is homopolypropylene, blockpolypropylene or a blend of homopolypropylene and blockpolypropylene, and has a melt flow rate of 2 to 40 g/10 min.; (2) talc that has a whiteness degree of 96% or more, and an average particle diameter of 4 to 10 ?m.
    Type: Application
    Filed: August 18, 2004
    Publication date: August 16, 2007
    Inventors: Toshihide Nara, Yukihiro Tsuchiya, Hidenori Ichikawa, Hiroyuki Muramatsu, Yutaka Atsumi
  • Patent number: 6034165
    Abstract: A propylene-based resin composition comprising (A) from 42 to 95% by weight of a propylene-based resin having an isotactic pentad fraction of at least 95%, (B) from 1 to 10% by weight of an ethylene-C.sub.3 -C.sub.18 .alpha.-olefin copolymer having a density of from 0.850 to 0.875 g/cm.sup.3 and a melt index of from 0.01 to 25 g/10 min, and prepared in the presence of a metallocene catalyst, (C) from 2 to 18% by weight of a high-density polyethylene having a density of from 0.93 to 0.97 g/cm.sup.3 and a melt index of from 0.5 to 10 g/10 min, and (D) from 2 to 35% by weight of talc, the total of the components (B) and (C) being from 3 to 23% by weight.
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: March 7, 2000
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Ryuzou Tomomatsu, Toshiyuki Ishii, Satoru Ohnishi, Toshihide Nara
  • Patent number: 5425926
    Abstract: In the process of coating a molded article of an olefinic resin, a finishing coating layer is formed on the surface of the molded article of an olefinic resin prepared by mixing a resin composition containing (E) polypropylene and (F) an ethylene-.alpha.-olefin copolymer with (G) a modified polyolefin in which a specific group is introduced, (H) stearic acid monoglyceride or stearyl diethanolamine, and (I) an inorganic filler, with a coating material prepared by mixing the main material containing a copolymer obtained by copolymerization of (A) a chlorinated polyolefin, (B) an acrylic monomer having hydroxyl group, and (C) a polyester prepolymer as the main component thereof with (D) a multi-functional polyisocyanate compound as the curing agent in a single coating process without pretreatment of the surface of the molded article using an organic solvent containing a halogen and without coating the surface of the molded article with a primer as undercoat.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: June 20, 1995
    Assignees: Suzuki Motor Corporation, Idemitsu Petrochemical Co., Ltd.
    Inventors: Takumi Kunikiyo, Ryoichi Ohki, Mitsutoshi Shimizu, Kazuhiko Yamauchi, Ryuichi Ohki, Koki Hirano, Toshihide Nara
  • Patent number: 4111898
    Abstract: A process for producing a resin composition having excellent plating properties comprising heating a mixture consisting substantially of 100 parts by weight of a polyolefin resin, 5 to 150 parts by weight of an inorganic filler, 1 to less than 20 parts by weight of a liquid rubber, 0.1 to 10 parts by weight of an unsaturated carboxylic acid and 0.001 to 10 parts by weight of a radical generator at 110.degree. to 280.degree. C. in the absence of solvents.
    Type: Grant
    Filed: October 26, 1977
    Date of Patent: September 5, 1978
    Assignee: Idemitsu Kosan Company, Ltd.
    Inventors: Akio Inayoshi, Toshimichi Ito, Kikuo Nagatoshi, Toshihide Nara, Shinsuke Sagata, Hitomi Tomari, Noriki Fujimoto, Hidehiko Kaji