Patents by Inventor Naomitsu Nishihata

Naomitsu Nishihata 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).

  • Publication number: 20030153660
    Abstract: A poly(arylene sulfide) resin composition comprising a poly(arylene sulfide) and, as a modifier, an organic amide compound compounded in a proportion of 0.2 to 10 parts by weight per 100 parts by weight of the poly(arylene sulfide).
    Type: Application
    Filed: May 20, 1999
    Publication date: August 14, 2003
    Inventors: NAOMITSU NISHIHATA, MASAHITO TADA, HIROYUKI SATO
  • Patent number: 6545075
    Abstract: A thermoplastic resin composition improved in compatibility, molding or forming ability, melt-flow properties and mechanical properties, which comprises 100 parts by weight of a resin component containing 40 to 99 wt. % of a poly(arylene sulfide) (A) and 1 to 60 wt. % of polyamide-imide (B), and 0.01 to 10 parts by weight of a silane compound (C) containing at least one functional group selected from the group consisting of amino, ureido, epoxy, isocyanate and mercapto groups.
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: April 8, 2003
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Naomitsu Nishihata, Hiroyuki Sato, Masahito Tada
  • Patent number: 6545081
    Abstract: A moderately conductive synthetic resin composition comprising a synthetic resin (A), a carbon precursor (B) and at least one conductive filler (C) selected from the group consisting of a non-fibrous conductive filler and a metallic fibrous material, both, having a volume resistivity lower than 102 &OHgr;·cm, and a moderately conductive synthetic resin composition comprising a synthetic resin (A), a carbon precursor (B) and carbon fiber (E).
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: April 8, 2003
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Naomitsu Nishihata, Kiyomi Ohuchi, Masahito Tada
  • Publication number: 20020107335
    Abstract: A thermoplastic resin composition improved in compatibility, molding or forming ability, melt-flow properties and mechanical properties, which comprises 100 parts by weight of a resin component containing 40 to 99 wt. % of a poly(arylene sulfide) (A) and 1 to 60 wt. % of polyamide-imide (B), and 0.01 to 10 parts by weight of a silane compound (C) containing at least one functional group selected from the group consisting of amino, ureido, epoxy, isocyanate and mercapto groups.
    Type: Application
    Filed: May 19, 2000
    Publication date: August 8, 2002
    Inventors: NAOMITSU NISHIHATA, HIROYUKI SATO, MASAHITO TADA
  • Patent number: 5554723
    Abstract: A process for the production of a poly(arylene thioether) containing phthalic anhydride groups wherein a dihalogen-substituted aromatic compound is reacted with an alkali metal sulfide in a polar organic solvent containing water to produce the poly(arylene thioether) is disclosed. This process comprises causing a monohalogen-substituted phthalic compound to exist in a polymerization reaction system, and controlling a ratio, a/b of the number of moles, a of the charged dihalogen-substituted aromatic compound to the number of moles, b of the charged alkali metal sulfide within a range of 0.8<a/b<1.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: September 10, 1996
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Naomitsu Nishihata, Shunzo Endo, Yukio Ichikawa, Takayuki Katto
  • Patent number: 5380819
    Abstract: A resin composition includes a poly(arylene thioether) and a polyamide. At least part of the poly(arylene thioether) consists of a poly(arylene thioether) containing phthalic anhydride groups.
    Type: Grant
    Filed: March 19, 1993
    Date of Patent: January 10, 1995
    Assignee: Kureha Kagaku Kogyo K.K.
    Inventors: Naomitsu Nishihata, Yukio Ichikawa, Takayuki Katto