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. 22, 2011
Filed:
Jul. 20, 2004
Applicants:
Wittich Kaule, Emmering, DE;
Hajo Mueck, Dachau, DE;
Siegfried Harms, Unterschleissheim, DE;
Inventors:
Assignee:
Giesecke & Devrient GmbH, Munich, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03H 1/00 (2006.01); G03H 1/26 (2006.01); G02B 5/32 (2006.01); B42D 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A security element, preferably for documents of value, which at least has one area with a diffraction structure, which under specific viewing conditions reconstructs a diffractive image. This area has subareas, which do not take part in the reconstruction of the diffractive image, and which represent a recognizable information. Essential is that the information represented by the subareas is recognizable mainly only under the viewing conditions, under which the diffractive image can be perceived.