Patents by Inventor Tsunefumi Nakagawa

Tsunefumi 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).

  • Glass flake composite
    Patent number: 5087518
    Abstract: Granules of glass flakes which comprise glass flakes in granular form and a binder which bonds the glass flakes to one another to form granules. The granules are used together with a molten thermoplastic resin.
    Type: Grant
    Filed: November 2, 1990
    Date of Patent: February 11, 1992
    Assignee: Nippon Glass Fiber Co., Ltd.
    Inventors: Shigeki Shimada, Hidekazu Tanaka, Tsunefumi Nakagawa
  • Agglomerated glass flakes
    Patent number: 5002827
    Abstract: Granules of glass flakes which comprise glass flakes in granular form and a binder which bonds the glass flakes to one another to form granules. The granules are used together with a molten thermoplastic resin.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: March 26, 1991
    Assignee: Nippon Glass Fiber Co., Ltd.
    Inventors: Shigeki Shimada, Hidekazu Tanaka, Tsunefumi Nakagawa