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:
Mar. 06, 2018
Filed:
May. 31, 2010
Applicants:
Johann Kecht, Munich, DE;
Stephan Steinlein, Munich, DE;
Inventors:
Johann Kecht, Munich, DE;
Stephan Steinlein, Munich, DE;
Assignee:
GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH, Munich, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B42D 25/00 (2014.01); B42D 25/364 (2014.01); B42D 25/369 (2014.01); B41M 3/14 (2006.01); C09D 11/02 (2014.01); B42D 25/29 (2014.01);
U.S. Cl.
CPC ...
B42D 25/369 (2014.10); B41M 3/14 (2013.01); B42D 25/00 (2014.10); B42D 25/29 (2014.10); B42D 25/364 (2014.10); C09D 11/02 (2013.01); B42D 2033/16 (2013.01);
Abstract
The invention relates to a security feature for securing documents of value having a plurality of microcapsules, which respectively have a wall and in which is respectively contained a liquid medium in which are distributed several magnetic particles which are movable in the liquid medium and whose arrangement within the microcapsule is changeable by the action of a magnetic field, whereby the magnetic particles are configured to arrange themselves within the microcapsule such that they form a light-diffractive structure.