Patents by Inventor Hidehisa Hashimoto

Hidehisa Hashimoto 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).

  • Magnetic tape cassette
    Patent number: 4267986
    Abstract: A magnetic tape cassette comprises a metallic intermediate frame having upper and under flat surfaces in parallel and providing a space large enough to hold a reel of magnetic tape, and a top plate and a bottom plate, both of which are plastic moldings in the form of substantially flat plates fastened together with the intermediate frame along the flat surfaces. The intermediate frame and the both plate have aligning and matching means for precise engagement with one another.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: May 19, 1981
    Assignee: TDK Electronics Co., Ltd.
    Inventors: Noboru Uemura, Shunzo Hatakeyama, Hidehisa Hashimoto
  • Video tape cassette
    Patent number: D258287
    Type: Grant
    Filed: June 5, 1979
    Date of Patent: February 17, 1981
    Assignee: TDK Electronics Co., Ltd.
    Inventors: Hidehisa Hashimoto, Keiichi Yoshizawa
  • Magazine of magnetic tape
    Patent number: D266419
    Type: Grant
    Filed: June 5, 1979
    Date of Patent: October 5, 1982
    Assignee: TDK Electronics Co., Ltd.
    Inventors: Hidehisa Hashimoto, Keiichi Yoshizawa
  • Demagnetizer for magnetic head of cassette tape recorder
    Patent number: D317155
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: May 28, 1991
    Assignee: TDK Corporation
    Inventor: Hidehisa Hashimoto