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).
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Patent number: 5414042Abstract: 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: GrantFiled: December 28, 1993Date of Patent: May 9, 1995Assignee: Unitika Ltd.Inventors: Kenji Yasue, Tsuneo Tamura, Shinichiro Katahira, Mioko Watanabe
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Patent number: 5206310Abstract: 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: GrantFiled: January 25, 1991Date of Patent: April 27, 1993Inventors: Kenji Yasue, Tsuneo Tamura, Akio Motoyama, Hiromasa Itakura
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Patent number: 5204418Abstract: 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: GrantFiled: January 30, 1992Date of Patent: April 20, 1993Assignee: Unitika Ltd.Inventors: Kenji Yasue, Eiji Y. Yamamoto, Katsuyuki Toma, Minoru Kishida, Yoshiaki Kozuka
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Patent number: 5064700Abstract: 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: GrantFiled: October 20, 1989Date of Patent: November 12, 1991Assignee: Stamicarbon B.V.Inventors: Kenji Yasue, Toshio Tsuji, Takashi Ida, Shigeru Hayase
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Patent number: 5043385Abstract: 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: GrantFiled: July 2, 1990Date of Patent: August 27, 1991Assignee: Stamicarbon B.V.Inventors: Kenji Yasue, Takeshi Marutani, Yasumasa Fukushima, Takashi Ida
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Patent number: 4804707Abstract: 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: GrantFiled: April 24, 1987Date of Patent: February 14, 1989Assignee: Unitika Ltd.Inventors: Takashi Okamoto, Kenji Yasue, Takeshi Marutani, Yasumasa Fukushima
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Patent number: 4171330Abstract: 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: GrantFiled: January 20, 1978Date of Patent: October 16, 1979Assignee: Unitika Ltd.Inventors: Kayomon Kyo, Katsuhiro Hirose, Kenji Yasue, Sinichi Tokumitsu, Haruo Kohyama
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Patent number: 4097431Abstract: 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: GrantFiled: July 30, 1976Date of Patent: June 27, 1978Assignee: Unitika Ltd.Inventors: Nakaba Asahara, Hiroyuki Takao, Kenji Yasue
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Patent number: 4064196Abstract: 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: GrantFiled: February 19, 1976Date of Patent: December 20, 1977Assignee: Unitika Ltd.Inventors: Kenichi Hazama, Isamu Hirose, Kenji Yasue, Daisuke Shinoura
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Patent number: 4052481Abstract: 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: GrantFiled: October 14, 1976Date of Patent: October 4, 1977Assignee: Unitika Ltd.Inventors: Nakaba Asahara, Yasuhiko Asai, Kenji Yasue