Patents by Inventor Karsten G. Pilested

Karsten G. Pilested 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).

  • Security system for surveilling the passage of commodities through defined zones
    Patent number: 5471196
    Abstract: A security system for monitoring objects, for example commodities, which system comprises an antenna (7) with at least one tuning capacitor (1) in the monitored zone and receiver/transmitter devices functioning as tuned resonance circuits on the individual objects monitored, the antenna emitting at short intervals an electrical signal that makes the receiver/transmitter device of a monitored object, which is present in the monitored zone, oscillate, which oscillations in the intermissions between antenna (7) transmissions can be received by the antenna (7)--or by a separate antenna--and used to detect the presence of the monitored object in the monitored zone. A switch (3) is provided in the electrical circuit between the antenna (7) and the tuning capacitor (1).
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: November 28, 1995
    Inventor: Karsten G. Pilested