Patents by Inventor Christoph Baldus

Christoph Baldus 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).

  • Data support with an opticallly variable element
    Patent number: 8137899
    Abstract: The invention relates to a data carrier with an optically variable structure having an embossed structure and a coating contrasting with the surface of the data carrier. The embossed structure and the coating are so combined that at least parts of the coating are completely visible upon perpendicular viewing but concealed upon oblique viewing so that a tilt effect arises upon alternate perpendicular and oblique viewing. The coating is executed uniformly and the embossed structure is divided into partial areas where different partial embossed structures are provided.
    Type: Grant
    Filed: September 6, 2001
    Date of Patent: March 20, 2012
    Assignee: Giesecke & Devrient GmbH
    Inventors: Johann Müller, Reinhard Plaschka, Jürgen Zerbes, Christoph Baldus