Patents by Inventor Hidehisa Matsuo

Hidehisa Matsuo 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).

  • Resin molded articles
    Patent number: 7303719
    Abstract: A disk-shape resin molded article such as a gear comprises a rim, a boss, a web having a disk configuration for connecting the rim and the boss, and gear teeth formed on the rim. The molded article is produced by an injection-compression molding process which comprises injecting a molten resin into a cavity of a metal mold, and pressing a web site and at least one site selected from the group consisting of a boss site and a rim site in a thickness direction. The cavity may have a capacity larger than the solidified products by contraction amount of the injected molten resin.
    Type: Grant
    Filed: January 16, 2004
    Date of Patent: December 4, 2007
    Assignee: Tigers Polymer Corporation
    Inventors: Kiyofumi Hiroi, Hideo Fujiwara, Hidehisa Matsuo, Yasuhiro Yao
  • Resin molded articles
    Publication number: 20040150138
    Abstract: A disk-shape resin molded article such as a gear comprises a rim, a boss, a web having a disk configuration for connecting the rim and the boss, and gear teeth formed on the rim. The molded article is produced by an injection-compression molding process which comprises injecting a molten resin into a cavity of a metal mold, and pressing a web site and at least one site selected from the group consisting of a boss site and a rim site in a thickness direction. The cavity may have a capacity larger than the solidified products by contraction amount of the injected molten resin.
    Type: Application
    Filed: January 16, 2004
    Publication date: August 5, 2004
    Applicant: Tigers Polymer Corporation
    Inventors: Kiyofumi Hiroi, Hideo Fujiwara, Hidehisa Matsuo, Yasuhiro Yao
  • Resin molded articles
    Publication number: 20020051860
    Abstract: A disk-shape resin molded article such as a gear comprises a rim, a boss, a web having a disk configuration for connecting the rim and the boss, and gear teeth formed on the rim. The molded article is produced by an injection-compression molding process which comprises injecting a molten resin into a cavity of a metal mold, and pressing a web site and at least one site selected from the group consisting of a boss site and a rim site in a thickness direction. The cavity may have a capacity larger than the solidified products by contraction amount of the injected molten resin.
    Type: Application
    Filed: October 26, 2001
    Publication date: May 2, 2002
    Inventors: Kiyofumi Hiroi, Hideo Fujiwara, Hidehisa Matsuo, Yasuhiro Yao