The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 15, 2004
Filed:
Jul. 16, 1997
Applicant:
Inventors:
Joachim Hoppe, Munich, DE;
Yahya Haghiri-Tehrani, Munich, DE;
Arno Hohmann, Munich, DE;
Josef Strassmaier, Emmering, DE;
Wolfgang Gauch, Otterfing, DE;
Matthias Bergmann, Vogtareuth, DE;
Gustav Dax, Heufeld, DE;
Assignee:
Giesecke & Devrient GmbH, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B42D 1/500 ;
U.S. Cl.
CPC ...
B42D 1/500 ;
Abstract
The invention relates to different methods for distortion-free production of data carriers having at least in partial areas a transparent plastic layer with a surface structure in the form of a lens structure. The surface structure can be produced by cutting method or embossed by applying heat and pressure. Alternatively the surface structure can be produced as a separate element which is connected after its production with the data carrier.