Patents by Inventor Robert W. Freyman

Robert W. Freyman 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).

  • Interrogation, and detection system
    Patent number: 4075632
    Abstract: The specification relates to a telemetering apparatus comprising a generator which generates at least a single frequency rf signal, a transponder for receiving that signal and for amplitude modulating it in accordance with information selected for transmission, an antenna on the transponder for reflecting the amplitude modulated signal, and a receiver which is preferably located at the generator. The receiver processes the signal to determine the information carried thereby.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: February 21, 1978
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Howard A. Baldwin, Steven W. Depp, Alfred R. Koelle, Robert W. Freyman