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:
Feb. 05, 2013
Filed:
Oct. 09, 2007
Applicants:
Stephan Heer, München, DE;
Thomas Giering, Kirchseeon, DE;
Kai Uwe Stock, Grünwald, DE;
Gregor Grauvogl, Oberhaching, DE;
Inventors:
Stephan Heer, München, DE;
Thomas Giering, Kirchseeon, DE;
Kai Uwe Stock, Grünwald, DE;
Gregor Grauvogl, Oberhaching, DE;
Assignee:
Giesecke & Devrient GmbH, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 19/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A printed document of value has an authenticity feature in the form of at least two luminescent substances on the basis of host lattices which are doped with one or a plurality of ions. By systematically changing the host lattices and/or ions of the (nd)electron configuration a specific setting of the luminescence properties of luminescent substances is possible, the combination of which permits a multiplicity of complex new authenticity features.