Patents Assigned to Security Graphics B.V.
  • Identification mark comprising an optically and electronically readable marking
    Patent number: 6609728
    Abstract: Authenticity/security identification consists of an optical marking and an (acoustic/electro)magnetic marking. The optical marking can comprise a hologram. The two identification marks are produced as a single entity during the production in a number of immediately successive steps. During this process a layer of soft magnetic material is provided with an additional layer of metal which contains the hologram.
    Type: Grant
    Filed: January 17, 2001
    Date of Patent: August 26, 2003
    Assignee: Security Graphics B.V.
    Inventors: Roelof Voerman, Bob Snoeck