Patents by Inventor Syuji Ohtawa

Syuji Ohtawa 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).

  • Electronic analog timepiece with voltage checking function
    Patent number: 4759003
    Abstract: An electronic analog timepiece with voltage checking function, which detects the power source condition, and which informs the user of the necessity of charging operation by changing the magnitude of the power source voltage into the distance by which the hand is carried or the amount by which the hand is moved upon operation from external side.The hand is stopped from moving for a predetermined period of time in the first time only in which the voltage checking operation is carried out.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: July 19, 1988
    Assignee: Seiko Instruments Inc.
    Inventors: Yoshihiko Kiyono, Syuji Ohtawa, Hitoshi Ochiai, Hiroshi Odagiri, Yuichi Inoue