Patents by Inventor Katsuhiko Hironaka

Katsuhiko Hironaka 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).

  • Reinforced and flame-retarded thermoplastic resin composition and process for producing the same
    Patent number: 6221947
    Abstract: According to the present invention, a resin composition having flame retardancy, high tracking resistance and excellent mechanical properties can be obtained by compounding aluminum borate whiskers with a thermoplastic resin that has been flame-retarded with a halogen-based flame retardant.
    Type: Grant
    Filed: May 18, 1999
    Date of Patent: April 24, 2001
    Assignee: Teijin Limited
    Inventor: Katsuhiko Hironaka
  • Polyester resin composition and a relay component formed thereof
    Patent number: 5814696
    Abstract: A polyester resin composition comprising (A) an aromatic polyester resin and (B) a polyester block copolymer resin which consists essentially of (a) a polyester soft block comprising an aromatic dicarboxylic acid component and a glycol component having 5 or more carbon atoms as main constituents and having a melting point of about 100.degree. C. or less or being amorphous and (b) a polyester hard block having a melting point of about 150.degree. C. or more. A relay component formed of the above polyester resin composition has excellent vibration-damping and noise suppression properties.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: September 29, 1998
    Assignee: Teijin Limited
    Inventors: Noritsugu Saiki, Katsuhiko Hironaka, Hodaka Yokomizo
  • Resin composition
    Patent number: 5104943
    Abstract: The invention relates to a resin composition comprising 100 parts by weight polyamide 4.6 resin and 2 to 200 parts by weight of a polyamide amide resin.The composition has improved HDT in wet state and improved impact resistance in dry state.
    Type: Grant
    Filed: May 23, 1989
    Date of Patent: April 14, 1992
    Assignee: Stamlcarbon B.V.
    Inventors: Katsuhiko Hironaka, Hiroo Inata, Shunichi Matsumura
  • Resin compositions
    Patent number: 4908407
    Abstract: A resin composition comprising a nylon-4,6 resin, an epoxy compound having two epoxy groups and at least one polymer selected from halogenated polystyrenes and halogenated poly-alpha-methylstyrenes, represented by the following general formula (I) ##STR1## (wherein R is a hydrogen atom or a methyl group; X is a bromine or chlorine atom; p is an integer of 1 to 5; and n is an integer of 2 or more).
    Type: Grant
    Filed: February 14, 1989
    Date of Patent: March 13, 1990
    Assignee: Teijin Limited
    Inventors: Yoshinari Ogawa, Seiichi Yamashiro, Katsuhiko Hironaka