Patents by Inventor Hendrik W. Prinsen

Hendrik W. Prinsen 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).

  • VCO-Controlled phase lock system
    Patent number: 4159475
    Abstract: A phase coherent canceller for jamming suppression is provided with a variable controlled oscillator which is locked in frequency and phase to a reference local oscillator in a closed loop configuration.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: June 26, 1979
    Assignee: Calspan Corporation
    Inventors: Stephen N. Andre, Hendrik W. Prinsen