Patents by Inventor Isuneo Shishido

Isuneo Shishido 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).

  • Five port waveguide switch
    Patent number: 4237431
    Abstract: A two-port-to-three-port waveguide switch comprising two single pole double throw waveguide switches integrated so that one of the terminals of each switch has a common junction.
    Type: Grant
    Filed: July 10, 1978
    Date of Patent: December 2, 1980
    Assignee: Hughes Aircraft Company
    Inventors: Isuneo Shishido, Herman W. Cramm, William L. Vick