Patents by Inventor Tetsu Numata

Tetsu Numata 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).

  • Mouse-type input device
    Patent number: 6147679
    Abstract: A mouse has a ball, a rotation detecting section for detecting the rotation of the ball, and a casing for containing the ball and the rotation detecting section. A hole is formed at a position on the upper surface of the casing directly above the ball, and covered with a transparent acrylic plate. This structure allows the operator to make certain, during operation, that the ball is smoothly rotating. The ball is placed offset toward the leading end of the mouse.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: November 14, 2000
    Assignee: Alps Electric Co., Ltd.
    Inventors: Tetsu Numata, Hiromi Chiba