Patents by Inventor Tetuji Aoyagi

Tetuji Aoyagi 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).

  • Wireless pen-type input device for use with a computer
    Patent number: 5166668
    Abstract: A wireless input device for computer comprises a pen-type input device having a source of light capable of transmitting pulses. Two light receiving elements are provided and these light receiving element are disposed for detecting an incident angle of light inputted from the source of light. The wireless input device also has an input unit body having an operational unit for calculating the position of the pen-type input device from the amounts of light detected by the two light receiving elements.
    Type: Grant
    Filed: April 10, 1991
    Date of Patent: November 24, 1992
    Assignee: Data Stream Corporation
    Inventor: Tetuji Aoyagi