Patents by Inventor Kenji Yasue

Kenji Yasue 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: 5414042
    Abstract: A reinforced polyamide resin composition which involves 100 parts by weight of a polyamide and from 0.01 to 100 parts by weight of fluoromica-based mineral with swelling characteristics.A process for producing the reinforced polyamide resin composition involving polymerizing a monomer in a state where from 0.01 to 100 parts by weight of fluoromica-based mineral with swelling characteristics is present per the monomer in an amount of forming 100 parts by weight of a polyamide.The reinforced polyamide resin composition is excellent in mechanical strength, toughness, heat resistance and dimensional stability.
    Type: Grant
    Filed: December 28, 1993
    Date of Patent: May 9, 1995
    Assignee: Unitika Ltd.
    Inventors: Kenji Yasue, Tsuneo Tamura, Shinichiro Katahira, Mioko Watanabe
  • Patent number: 5206310
    Abstract: The invention relates to a polyamide resin composition comprising(A) nylon 4.6,(B) an aliphatic polyamide having a CH.sub.2 /NHCO ratio of from 6 to 11 and(C) a non-crystalline polyamide having a glass transition temperature of at least 100.degree. C. The composition has a decreased water absorption while retaining high mechanical strength, heat stability and chemical resistance. Dimensional stability and mechanical properties after water absorption are unexpectedly good.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: April 27, 1993
    Inventors: Kenji Yasue, Tsuneo Tamura, Akio Motoyama, Hiromasa Itakura
  • Patent number: 5204418
    Abstract: A light-weight polyester film which comprises (A) from 50 to 95% by weight of a crystalline polyester resin and (B) from 5 to 50% by weight of a maleimide copolymer, said maleimide copolymer being dispersed in the film in the form of particles having diameters of from 0.1 to 20 .mu.m and fine voids being present in the film, and which has an apparent specific gravity of from 0.3 to 1.1, wherein said maleimide copolymer comprises from 30 to 50 mol % of a maleimide monomer group, from 30 to 70 mol % of an aromatic vinyl monomer group, from 0 to 40 mol % of an unsaturated dicarboxylic anhydride monomer group and from 0 to 40 mol % of other copolymerizable monomer group, and said maleimide copolymer has a glass transition temperature higher by at least 10.degree. C. than the crystalline polyester resin.
    Type: Grant
    Filed: January 30, 1992
    Date of Patent: April 20, 1993
    Assignee: Unitika Ltd.
    Inventors: Kenji Yasue, Eiji Y. Yamamoto, Katsuyuki Toma, Minoru Kishida, Yoshiaki Kozuka
  • Patent number: 5064700
    Abstract: The invention is related to blow-molded nylon products comprising 40-95 parts by weight nylon 46, 3-40 parts by weight nylon 6, nylon 66 and/or nylon 6/66 and 2-40 parts by weight of an acid or epoxy modified polyolefin. Blow moldability and impact resistance are improved without deterioration of high temperature resistance and mechanical strength.
    Type: Grant
    Filed: October 20, 1989
    Date of Patent: November 12, 1991
    Assignee: Stamicarbon B.V.
    Inventors: Kenji Yasue, Toshio Tsuji, Takashi Ida, Shigeru Hayase
  • Patent number: 5043385
    Abstract: An impact resistant resin composition comprising from 30 to 70% (wt) of a polyamide with at least 40 mol/10.sup.6 g amino groups, from 5 to 40% (wt) of a polyarylate, from 5 to 40% by weight of the adduct of an unsaturated dicarboxylic acid anhydride and a butadiene copolymer with at least one monomer from the group of aromatic vinylmonomer, an unsaturated nitrile monomer and an acrylate monomer, and from 3 to 30% (wt) of an epoxy group-containing olefine copolymer obtained by copolymerizing at least one unsaturated glycidyl monomer with at least one unsaturated olefin monomer.
    Type: Grant
    Filed: July 2, 1990
    Date of Patent: August 27, 1991
    Assignee: Stamicarbon B.V.
    Inventors: Kenji Yasue, Takeshi Marutani, Yasumasa Fukushima, Takashi Ida
  • Patent number: 4804707
    Abstract: A resin composition which comprises a resin blend comprising from 10 to 70% by weight of a polyarylate and from 30 to 90% by weight of a polyamide, and (A) an epoxy group-containing olefin copolymer obtained by copolymerizing at least one unsaturated glycidyl monomer with at least one olefin unsaturated monomer and (B) an acid anhydride-containing olefin copolymer obtained by copolymerizing a polyolefin or an olefin copolymer with an unsaturated dicarboxylic anhydride, incorporated in a total amount of form 3 to 30% by weight to said resin blend.
    Type: Grant
    Filed: April 24, 1987
    Date of Patent: February 14, 1989
    Assignee: Unitika Ltd.
    Inventors: Takashi Okamoto, Kenji Yasue, Takeshi Marutani, Yasumasa Fukushima
  • Patent number: 4171330
    Abstract: A fire-retardant resin composition comprising(A) an aromatic copolyester derived from(1) a mixture of terephthalic acid and isophthalic acid or the functional derivatives thereof and(2) a bisphenol or the functional derivatives thereof,(B) a polyamide,(C) a polyalkylene phenylene ester or a polyalkylene phenylene ester ether and(D) an aromatic halogen compound. The resin composition has superior moldability, and molded articles prepared from the resin composition have superior chemical properties, thermal stability, mechanical properties and fire retardancy. The resin composition may additionally contain (E) a fire-retardant assistant.
    Type: Grant
    Filed: January 20, 1978
    Date of Patent: October 16, 1979
    Assignee: Unitika Ltd.
    Inventors: Kayomon Kyo, Katsuhiro Hirose, Kenji Yasue, Sinichi Tokumitsu, Haruo Kohyama
  • Patent number: 4097431
    Abstract: An aromatic copolyester composition comprising (A) an aromatic copolyester derived from terephthalic acid, isophthalic acid and a bisphenol and (B) a phosphite compound, or an aromatic copolyester composition comprising components (A) and (B) plus (C) a metal salt of an organic carboxylic acid. Molded articles prepared from such aromatic copolyester compositions have superior mechanical properties and fire retardancy and reduced coloration and crazing.
    Type: Grant
    Filed: July 30, 1976
    Date of Patent: June 27, 1978
    Assignee: Unitika Ltd.
    Inventors: Nakaba Asahara, Hiroyuki Takao, Kenji Yasue
  • Patent number: 4064196
    Abstract: A resin composition comprising: (a) an aromatic co-polyester comprising terephthalic acid, isophthalic acid and a halogen-free bisphenol; and (b) a halogen-containing aromatic co-polyester containing terephthalic acid, isophthalic acid and, at least in part, a bisphenol bearing a halogen substituent(s) as a comonomer. Molded articles prepared from such a resin composition possess excellent mechanical properties, electrical properties and flame-retardant capabilities.
    Type: Grant
    Filed: February 19, 1976
    Date of Patent: December 20, 1977
    Assignee: Unitika Ltd.
    Inventors: Kenichi Hazama, Isamu Hirose, Kenji Yasue, Daisuke Shinoura
  • Patent number: 4052481
    Abstract: A resin composition comprising (A) an aromatic copolyester comprising the reaction product in about equimolar amounts of (1) terephthalic acid and/or the functional derivatives thereof, isophthalic acid and/or the functional derivatives thereof and (2) a bisphenol and/or the functional derivatives thereof, (B) a polyamide, and (C) a polyalkylene phenylene ester or a polyalkylene phenylene ester ether, and a process for preparing the same. The resin composition has excellent moldability and the molded articles made therefrom have superior chemical resistance, thermal stability and mechanical properties.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: October 4, 1977
    Assignee: Unitika Ltd.
    Inventors: Nakaba Asahara, Yasuhiko Asai, Kenji Yasue