Patents by Inventor Tomogoro Shigeta

Tomogoro Shigeta 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 navigation calculator
    Patent number: 4156912
    Abstract: An electronic navigation calculator having first input key group for navigation functions, second input key group for navigation numerals, third input key group for navigation operations, a memory device supplied with information signals from said first, second and third input key groups and memorizing said supplied information signals, operational and control device for carrying out predetermined navigation calculations in accordance with information signals from said input key groups, and output device for indicating the calculated results. As a result, a calculation of direction, speed, position and time of a moving body is carried out in accordance with said information signals from said first, second and third input key groups and the calculation result is displayed.
    Type: Grant
    Filed: November 14, 1974
    Date of Patent: May 29, 1979
    Assignee: Systek Corporation
    Inventors: Tomogoro Shigeta, Masuo Okuda, Tetsuo Ohnishi