Patents by Inventor Tetsu Iwatsuki

Tetsu Iwatsuki 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).

  • Shoe sole for leg apparatus
    Patent number: 5464380
    Abstract: A leg apparatus shoe sole has an upper sole member and a lower sole member interconnected by expanders so as to be movable towards and away from each other wherein the expanders are connected with a remote actuator by a drive wire. The actuator is operated to reduce the thickness of the shoe sole when the associated leg is the free leg and to increase its thickness when the associated leg is the supporting leg.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: November 7, 1995
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry
    Inventors: Kiichi Ikeda, Shuji Kajita, Tetsu Iwatsuki