Patents by Inventor Tetsuzo Aoyama

Tetsuzo Aoyama 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).

  • Timepiece device
    Patent number: 5548565
    Abstract: Timepiece device capable of illuminating an outside object and providing an outstanding illuminating effect. A light-emitting diode of high-luminance and high directivity for illuminating the outside object is provided on the side of an outer case of a timepiece and the light-emitting direction is arranged parallel to a line passing through numerals 6 and 12 on the dial.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: August 20, 1996
    Assignee: Mansei Kogyo Kabushiki Kaisha
    Inventors: Tetsuzo Aoyama, Yoshiyuki Hayami