Patents by Inventor Bernardus C. van Zon

Bernardus C. van Zon 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).

  • Microwave identification system
    Patent number: 5361071
    Abstract: A microwave identification system comprising a transmitter/receiver provided with an antenna system, a plurality of responders provided with an antenna system, the communication between transmitter/receiver and responders taking place by means of electromagnetic waves in the microwave range, wherein the antenna system of the responders comprises an array with at least two antenna elements (12, 13) interconnected via a modulation device (14, 15, 16) and, for obtaining a retroreflective effect, the signal generated in an interrogation field by one of the two antenna elements is applied to the modulation device and, after being modulated with a code that is characteristic for the responder, is applied to the other antenna element to be radiated by the other antenna element.
    Type: Grant
    Filed: August 6, 1992
    Date of Patent: November 1, 1994
    Assignee: N.V. Nederlandsche Apparatenfabriek Nedap
    Inventor: Bernardus C. van Zon