Patents by Inventor Toshiharu Sakaguchi

Toshiharu Sakaguchi 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).

  • Method for manufacturing glass fiber-reinforced resin moldings
    Patent number: 6652796
    Abstract: In manufacturing glass fiber-reinforced resin moldings a peroxide is mixed into a molding material prepared by mixing glass fibers with a thermoplastic resin, and such a molding material is molded. The peroxide is fed together with the molding material in an injection molding machine, the molding material is heated and kneaded in the molding machine, and the glass fiber mixed molten resin is injected into a mold to obtain a molded body.
    Type: Grant
    Filed: November 13, 2000
    Date of Patent: November 25, 2003
    Assignee: Kishimoto Sangyu Co Ltd
    Inventors: Takeshi Moriwaki, Toshiharu Sakaguchi
  • Thermoplastic polyester resin composition
    Patent number: 6399695
    Abstract: The purposes of the present invention are to provide highly impact-resistant thermoplastic polyester resin inexpensively and promote the recycling of PET bottles, which are dumped as waste. To attain the purposes, a carboxyl-modified metallocene catalyzed polyolefin elastomer or a glycidyl methacrylate adduct to the elastomer is melt-blended with a thermoplastic polyester resin, particularly, the powder of recycled PET bottles. Additionally, a filler can be mixed, if necessary.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: June 4, 2002
    Assignee: Kishimoto Sangyo Co., Ltd.
    Inventors: Takeshi Moriwaki, Toshiharu Sakaguchi
  • Polyamide resin composition
    Patent number: 6075116
    Abstract: The present invention provides a highly impact resistant polyamide composition which comprises a polyamide resin and an acid modification product of a metallocene catalyzed polyolefin elastomer. The invention also provides a less hygroscopic and highly impact resistant polyamide composition which comprises a polyamide resin, novolak phenol and an acid modification product of a metallocene catalyzed polyolefin elastomer. Used as the polyamide resin is less expensive nylon 6.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: June 13, 2000
    Assignee: Kishimoto Sangyo Co., Ltd.
    Inventors: Takeshi Moriwaki, Toshiharu Sakaguchi
  • Electro-conductive thermoplastic resin foam and preparation process thereof
    Patent number: 4525297
    Abstract: An electro-conductive foam is prepared by mixing together 100 parts by weight of a resin component consisting of 10 to 90 parts by weight of a crystalline thermoplastic polyolefin type resin and 10 to 90 parts by weight of a low-crystalline thermoplastic resin with 5 to 40 parts by weight of electro-conductive carbon, by cross linking this mixture and then forming it by heating.By using the mixture of crystalline polyolefin type thermoplastic resins and low-crystalline thermoplastic resins as the resinous component, the present invention provides an electro-conductive foam having a good foam surface condition and capabilities of deep-draw forming.This electro-conductive foam is utilized as a material for semiconductor integrated circuit containers and similar applications.
    Type: Grant
    Filed: November 28, 1983
    Date of Patent: June 25, 1985
    Assignees: Toray Industries, Inc., Tokyo Printing Ink Mfg. Co., Ltd.
    Inventors: Toshihiro Yamane, Kenzi Ohashi, Toshiharu Sakaguchi