Patents Assigned to IRD/AS
  • Polymeric radio frequency resonant tags and method for manufacture
    Patent number: 6031458
    Abstract: The present invention provides polymeric radio frequency resonant tags and methods of manufacturing these tags for use in detection of theft of article for sale.
    Type: Grant
    Filed: August 7, 1998
    Date of Patent: February 29, 2000
    Assignee: IRD/AS
    Inventors: Soren Jacobsen, John Engell, Jorgen Schjerning Lundsgaard, David Morgan Thomas