Patents Assigned to Kabushiki Kaisha Sanko Kaihatsu Kagaku Kenkyusho
  • Engineering plastic composition and articles made of the same
    Patent number: 5236988
    Abstract: An engineering plastic composition with excellent flowability, heat stability, and desirable mechanical properties is provided. The composition contains an engineering plastic material and an aliphatic polyester.
    Type: Grant
    Filed: September 25, 1990
    Date of Patent: August 17, 1993
    Assignees: Sekisui Chemical Co., Ltd., Kabushiki Kaisha Sanko Kaihatsu Kagaku Kenkyusho
    Inventors: Kazuo Doyama, Makoto Yamaguchi, Makoto Ohsuga, Akihiro Niki, Toranosuke Saito, Hiroki Tsunomachi, Daishiro Kishimoto
  • Polyester and an article made of the same
    Patent number: 5235024
    Abstract: A polyester is provided that comprises as main monomer components thereof a dicarboxylic acid and a diol, including a p-quaterphenyl derivative of specific formula. The use of appropriate kinds of dicarboxylic acid for the polyester makes it possible to obtain a thermoplastic elastomer or an engineering platic material (i.e., liquid-crystal polymer).
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: August 10, 1993
    Assignees: Sekisui Kagaku Kogyo Kabushiki Kaisha, Kabushiki Kaisha Sanko Kaihatsu Kagaku Kenkyusho
    Inventors: Akihiro Niki, Makoto Ohsuga, Toshio Uesaka, Toranosuke Saito, Hiroki Tsunomachi, Kazuo Doyama, Makoto Yamaguchi, Daishiro Kishimoto
  • Polyester and an article made of the same comprising a p-quaterphenyl derivative
    Patent number: 5191057
    Abstract: A polyester is provided that comprises as main monomer components thereof a dicarboxylic acid and a diol, including a p-quaterphenyl derivative of specific formula. The use of appropriate kinds of dicarboxylic acid for the polyester makes it possible to obtain a thermoplastic elastomer or an engineering plastic material (i.e., liquid-crystal polymer).
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: March 2, 1993
    Assignees: Sekisui Kagaku Kogyo Kabushiki Kaisha, Kabushiki Kaisha Sanko Kaihatsu Kagaku Kenkyusho
    Inventors: Akihiro Niki, Makoto Ohsuga, Toshio Uesaka, Toranosuke Saito, Hiroki Tsunomachi, Kazuo Doyama, Makoto Yamaguchi, Daishiro Kishimoto
  • Engineering plastic composition and an article made of the same
    Patent number: 5011879
    Abstract: An engineering plastic composition with excellent flowability, heat stability, and desirable mechanical properties is provided. The composition comprises an engineering plastic material and at least one p-quaterphenyl derivative of specific formula.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: April 30, 1991
    Assignees: Sekisui Kagaku Kogyo Kabushiki Kaisha, Kabushiki Kaisha Sanko Kaihatsu Kagaku Kenkyusho
    Inventors: Toshio Uesaka, Akihiro Niki, Makoto Ohsuga, Toranosuke Saito, Hiroki Tsunomachi, Makoto Yamaguchi, Kazuo Doyama, Daishiro Kishimoto