Patents by Inventor Pierre M. Alexander

Pierre M. Alexander 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).

  • Cooperative passive identification system for moving or stationary objects
    Patent number: 5073780
    Abstract: This method can be used either as an independent radar system or as an adct to an existing radar system, after suitably modifying the existing system, and will provide a cooperative, Radio Frequency passive, identification system for either stationary or moving targets. The system uses suitable devices that will mechanically vibrate as a transponder mechanism as an attachment to stationary or moving targets. A sideband analyzer is used to identify the viberation pattern in the radar return, and therefore, identifies the target.
    Type: Grant
    Filed: December 22, 1982
    Date of Patent: December 17, 1991
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Thomas A. Barley, Pierre M. Alexander, Gustaf J. Rast, Jr.