Patents by Inventor Naonobu Tadokoro

Naonobu Tadokoro 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).

  • Polyester resin composite molded article
    Patent number: 6346320
    Abstract: A polyester resin composite molded article composed of a resin composition (A) comprising a polybutylene terephthalate (A1), an inorganic filler (A2) and a modified ethylenic copolymer (A3) produced by the graft-polymerization of an &agr;, &bgr;-unsaturated carboxylic acid or its acid derivative and a metal (B) wherein a part or total of the metal (B) is covered with the resin composition (A), the graft copolymer (A3) is present in the form of dispersed particles in the molded part of the resin composition constituting the composite molded article, and the diameters of the dispersed particles are between 1 and 3 &mgr;m. The present invention provides a polyester resin composite molded article having excellent thermal shock resistance and exhibiting retention stability in a molding cycle in insert molding, etc.
    Type: Grant
    Filed: January 6, 1999
    Date of Patent: February 12, 2002
    Assignee: Teijin Limited
    Inventors: Mitsuru Doteguchi, Naonobu Tadokoro
  • COMPOSITE POLYESTER RESIN MOLDINGS
    Publication number: 20010016263
    Abstract: A polyester resin composite molded article composed of a resin composition (A) comprising a polybutylene terephthalate (A1), an inorganic filler (A2) and a modified ethylenic copolymer (A3) produced by the graft-polymerization of an &agr;, &bgr;-unsaturated carboxylic acid or its acid derivative and a metal (B) wherein a part or total of the metal (B) is covered with the resin composition (A), the graft copolymer (A3) is present in the form of dispersed particles in the molded part of the resin composition constituting the composite molded article, and the diameters of the dispersed particles are between 1 and 3 &mgr;m. The present invention provides a polyester resin composite molded article having excellent thermal shock resistance and exhibiting retention stability in a molding cycle in insert molding, etc.
    Type: Application
    Filed: January 6, 1999
    Publication date: August 23, 2001
    Inventors: MITSURU DOTEGUCHI, NAONOBU TADOKORO
  • Polybutylene terephthalate having low carboxyl group concentration and loose tube for optical fiber comprising the same
    Patent number: 5709916
    Abstract: A loose tube for an optical fiber comprising a polybutylene terephthalate. The polybutylene terephthalate has a terminal carboxyl group concentration of 10 eq./10.sup.6 g.multidot.polymer or less and an intrinsic viscosity ?.eta.!, measured at 25.degree. C. in orthochlorophenol, of 0.9 to 1.4 dl/g.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: January 20, 1998
    Assignee: Teijin Limited
    Inventors: Noriyuki Akagi, Hiroki Nagano, Masami Umeda, Naonobu Tadokoro, Kazumoto Miyajima