Patents by Inventor Philipp Blacksmith

Philipp Blacksmith 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).

  • Radar intrusion detection system
    Patent number: 4132988
    Abstract: A radar intrusion detection system for isolated resources uses only one bistatic radar in combination with multiple passive reflectors to define the zone to be protected. Any intruder crossing a boundary of the zone within which is located the isolated resources interrupts the radar beam and thus may sound an alarm.
    Type: Grant
    Filed: August 19, 1977
    Date of Patent: January 2, 1979
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Philipp Blacksmith, J. Leon Poirier, Frederick S. Holt