Patents by Inventor John A. Spada

John A. Spada 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).

  • Microwave amplifier
    Patent number: 4535302
    Abstract: An improved microwave amplifier is shown to comprise an IMPATT diode in a coaxial circuit coupled to a section of double-ridged waveguide forming a resonant cavity with a low Q, such cavity in turn being coupled to outside circuitry through a compound iris.
    Type: Grant
    Filed: December 5, 1983
    Date of Patent: August 13, 1985
    Assignee: Raytheon Company
    Inventors: Charles S. Ward, Richard W. Laton, John A. Spada