Patents by Inventor Cornelis Simon Adriaan De Nood

Cornelis Simon Adriaan De Nood 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).

  • Circular magnetic target for an electronic article surveillance system
    Patent number: 5867098
    Abstract: A transmitter produces a magnetic alternating field having a predetermined frequency. A receiver is provided with a detector which is able to detect predetermined higher harmonics of the frequency of the alternating field. A transponder includes a signal element made of soft magnetic material. When the transponder is placed in the magnetic alternating field, higher harmonics of the frequency of the alternating field are generated by the signal element. The signal element is in the form of a ring.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: February 2, 1999
    Assignee: Dutch A&A Trading B.V.
    Inventors: Willem Angel, Henri Batterink, Cornelis Simon Adriaan De Nood