Patents by Inventor Ryozo Aoki

Ryozo Aoki 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).

  • Wrist band
    Patent number: 4089161
    Abstract: A flexible link chain in which a plurality of transversely spaced end lugs are connected to each other by a plurality of connecting rods, on which center sheaths are rotatably disposed to rotatably support center links, respectively, which are disposed between the transversely spaced end lugs.
    Type: Grant
    Filed: January 17, 1977
    Date of Patent: May 16, 1978
    Assignee: Citizen Watch Company Limited
    Inventor: Ryozo Aoki