Patents by Inventor Gunkichi Tadatsu

Gunkichi Tadatsu 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).

  • Undersea operation system
    Patent number: 5042959
    Abstract: An undersea operation system comprising an undersea operation machine for conducting undersea operations such as undersea construction and the collection of stones and rocks, and a backup ship operatively connected to this undersea operation machine. The undersea operation machine includes a vehicle, arms which are connected to this vehicle, etc. The vehicle and the arms are operated by hydraulic pressure which is supplied through a cable connecting the undersea operation machine to the backup ship, whereby smooth operation of the undersea operation machine is ensured even in a deep sea region.
    Type: Grant
    Filed: August 1, 1989
    Date of Patent: August 27, 1991
    Assignee: Masao Sakagami
    Inventor: Gunkichi Tadatsu