Patents by Inventor Manfred Engl

Manfred Engl 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).

  • Laminated multi-layer card with an inlaid security element in the form of relief structures
    Patent number: 7637537
    Abstract: A card, in particular credit card, identity card, bank card or the like is proposed that includes a plurality of laminated layers between which a security element with a relief structure, in particular holographic diffraction structures, is embedded. The materials are selected so that the softening temperature of the security element layer having the relief structure has a higher softening temperature than the card layers between which the security element is laminated. This permits the multilayer laminated card to be produced by conventional laminating methods without appreciably impairing the relief structure by the pressures and temperatures thereby occurring. Special combinations of materials and in particular suitable materials for the layer having the relief structure are proposed.
    Type: Grant
    Filed: February 20, 2001
    Date of Patent: December 29, 2009
    Assignee: Giesecke & Devrient GmbH
    Inventors: Mario Keller, Günter Endres, Manfred Engl
  • Laminated multi-layer card with an inlaid security element in the form of relief structures
    Publication number: 20030127847
    Abstract: A card, in particular credit card, identity card, bank card or the like is proposed that includes a plurality of laminated layers between which a security element with a relief structure, in particular holographic diffraction structures, is embedded. The materials are selected so that the softening temperature of the security element layer having the relief structure has a higher softening temperature than the card layers between which the security element is laminated. This permits the multilayer laminated card to be produced by conventional laminating methods without appreciably impairing the relief structure by the pressures and temperatures thereby occurring. Special combinations of materials and in particular suitable materials for the layer having the relief structure are proposed.
    Type: Application
    Filed: December 2, 2002
    Publication date: July 10, 2003
    Inventors: Mario Keller, Gunter Endres, Manfred Engl