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. 16, 2020
Filed:
Jul. 14, 2015
Applicant:
Giesecke & Devrient Gmbh, München, DE;
Inventor:
Hans Lochbihler, München, DE;
Assignee:
GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B42D 25/328 (2014.01); G02B 5/18 (2006.01); B42D 25/29 (2014.01); B42D 25/373 (2014.01); B42D 25/351 (2014.01); B42D 25/425 (2014.01);
U.S. Cl.
CPC ...
B42D 25/328 (2014.10); B42D 25/29 (2014.10); B42D 25/351 (2014.10); B42D 25/373 (2014.10); B42D 25/425 (2014.10); G02B 5/1842 (2013.01); G02B 5/1861 (2013.01); G02B 5/1866 (2013.01);
Abstract
A security element for manufacturing value documents provides at least one image, formed by a grating structure which has a plurality of trough-shaped microcavities. The microcavities have a structure width from 0.5 μm to 3 μm and an aspect ratio of 0.4 or greater, a metal-containing coating is applied to the grating structure, and in the grating structure the trough-shaped microcavities are separated from each other respectively by strips which are planar and respectively more than 200 nm and maximally 1,200 nm wide.