Patents by Inventor Tooru Kadowaki

Tooru Kadowaki 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).

  • Gear train for a wrist watch
    Patent number: 4074517
    Abstract: In the gear train of a wrist watch a jewel mounted on the lower side of a gear wheel connected to the second hand engages the enlarged upper end of the center pipe. The friction factor between the gear wheel and the center pipe is thereby reduced and the performance of the watch is improved.
    Type: Grant
    Filed: July 14, 1976
    Date of Patent: February 21, 1978
    Assignee: Kabushiki Kaisha Daini Seikosha
    Inventors: Yoshio Tatsumi, Tooru Kadowaki