Patents by Inventor Christof Siegfried

Christof Siegfried 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).

  • Card-format data medium, method for the manufacture of such a data medium and lamination device for the manufacture of a card-format data medium
    Publication number: 20040178625
    Abstract: The card-format data medium (1, 1′) has a substrate (S) with an upper and a lower surface (10, 11) and an encircling edge (10a). A transparent protection layer (6) and a security film (5) are applied to the top surface (10) of the substrate (S). The security film (5) is positioned within the top surface (10) of the substrate (S) and the transparent protection layer (6) projects beyond the security film (5) all the way around. In at least one peripheral area (6a, 6a′), the protection layer (6) is bonded directly to the substrate (S) over a wide area. The data medium (1, 1′) is particularly resistant to environmental factors and secure against tampering and counterfeiting.
    Type: Application
    Filed: April 14, 2003
    Publication date: September 16, 2004
    Applicant: TRUB AG
    Inventors: Christof Siegfried, Paul Christen