Patents by Inventor Robert J. Follen

Robert J. Follen 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).

  • Intruder detection system
    Patent number: 4197537
    Abstract: A microwave radar type of intruder detection system incorporating signal sensing, storing and comparison logic which enables the system to self-adapt to any preselected environment and produce a signal in the event of a predetermined change from the ambient conditions of the preselected environment.
    Type: Grant
    Filed: January 3, 1978
    Date of Patent: April 8, 1980
    Assignee: Honeywell Inc.
    Inventors: Robert J. Follen, Baard H. Thue