Patents by Inventor Hisaya Iwamura

Hisaya Iwamura 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).

  • Polyphenylene sulfide resin compositions
    Patent number: 7569635
    Abstract: A polyphenylene sulfide resin composition which comprises 100 parts by weight of a polyphenylene sulfide resin (A) and, compounded therewith, 1 to 100 parts by weight of glass fibers (B) having a single-fiber diameter of 12 ?m or lager and has a crystallization temperature during cooling of 205° C. or lower. Also provided is a polyphenylene sulfide resin composition which comprises 100 parts by weight of a polyphenylene sulfide resin (A) and, compounded therewith, 1 to 100 parts by weight of glass fibers (B) having a single-fiber diameter of 10 to 12 ?m, excluding 12 ?m, has a crystallization temperature during cooling of 205° C. or lower and a chloroform-extractable content of 0.5 wt. % or lower, and gives a 2 mm-thick molded product which has a transmittance of 15% or higher for laser beam having a wavelength of 940 nm and a heat distortion temperature of 230° C. or higher under a load of 1.82 MPa.
    Type: Grant
    Filed: May 25, 2004
    Date of Patent: August 4, 2009
    Assignee: Toray Industries, Inc.
    Inventors: Akira Kojima, Takeshi Nishi, Hisaya Iwamura
  • Polyphenylene sulfide resin compositions
    Publication number: 20070021549
    Abstract: A polyphenylene sulfide resin composition which comprises 100 parts by weight of a polyphenylene sulfide resin (A) and, compounded therewith, 1 to 100 parts by weight of glass fibers (B) having a single-fiber diameter of 12 ?m or lager and has a crystallization temperature during cooling of 205° C. or lower. Also provided is a polyphenylene sulfide resin composition which comprises 100 parts by weight of a polyphenylene sulfide resin (A) and, compounded therewith, 1 to 100 parts by weight of glass fibers (B) having a single-fiber diameter of 10 to 12 ?m, excluding 12 ?m, has a crystallization temperature during cooling of 205° C. or lower and a chloroform-extractable content of 0.5 wt. % or lower, and gives a 2 mm-thick molded product which has a transmittance of 15% or higher for laser beam having a wavelength of 940 nm and a heat distortion temperature of 230° C. or higher under a load of 1.82 MPa.
    Type: Application
    Filed: May 25, 2004
    Publication date: January 25, 2007
    Inventors: Akira Kojima, Takeshi Nishi, Hisaya Iwamura