Patents by Inventor Nozomu Nakagawa

Nozomu Nakagawa 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).

  • Polyarylene sulfide resin composition
    Patent number: 5705550
    Abstract: A polyarylene sulfide resin composition is improved in mold releasing characteristics in molding, is thermally and chemically stable, evolves little decomposition gases and exhibits excellent mechanical characteristics. The composition can be prepared by blending (A) 100 parts by weight of a polyarylene sulfide resin with (B) 0.01 to 5 parts by weight of an ester compound composed of a polybasic aliphatic carboxylic acid and a monohydric aliphatic alcohol.
    Type: Grant
    Filed: August 22, 1996
    Date of Patent: January 6, 1998
    Assignee: Polyplastics Co., Ltd.
    Inventor: Nozomu Nakagawa
  • Polyarylene sulfide resin composition
    Patent number: 5578659
    Abstract: A polyarylene sulfide resin composition having excellent metal corrosion resistance and excellent mechanical properties is composed of 100 parts by weight of a polyarylene sulfide resin; from 0.1 to 10 parts by weight of a specific metal compound the surface of which has been pretreated with a first alkoxysilane compound; from 0 to 10 parts by weight of a second alkoxysilane compound; and from 5 to 500 parts by weight of an organic filler.
    Type: Grant
    Filed: June 23, 1995
    Date of Patent: November 26, 1996
    Assignee: Polyplastics Co., Ltd.
    Inventors: Sachio Anada, Nozomu Nakagawa, Kazutomo Tokushige, Toshikatsu Nitoh
  • Weather-resistant polyacetal resin compositions and weather-resistant molded articles formed thereof
    Patent number: 5171770
    Abstract: Weather-resistant polyacetal compositions and molded parts formed of such compositions including a polyacetal base resin and a weather stabilization packaged which necessarily includes a UV-light stabilizer for the polyacetal resin, and a basic compound which contains at least one tertiary nitrogen atom and at least one metal carboxylate group in its molecule. The compositions of the present invention may optionally include a colorant.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: December 15, 1992
    Assignee: Polyplastics Co., Ltd.
    Inventor: Nozomu Nakagawa
  • Polyoxymethylene compositions and method of manufacturing the same
    Patent number: 4861814
    Abstract: A polyoxymethylene composition comprises an antioxidant of 0.05 to 5% by weight and a basic compound containing at least one tertiary nitrogen atom and a metallic salt of carboxylic acid in the same one molecule of 0.01 to 2% by weight based on polyoxymethylene.
    Type: Grant
    Filed: April 22, 1988
    Date of Patent: August 29, 1989
    Assignee: Polyplastics Co., Ltd.
    Inventors: Nozomu Nakagawa, Masaru Kubota, Shuichi Chino