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. 03, 2020
Filed:
Aug. 22, 2017
Applicant:
Giesecke+devrient Currency Technology Gmbh, München, DE;
Inventors:
Assignee:
GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B42D 25/36 (2014.01); B42D 15/00 (2006.01); B42D 25/369 (2014.01); B42D 25/382 (2014.01); B42D 25/387 (2014.01); B42D 25/45 (2014.01); B42D 25/475 (2014.01); B42D 25/455 (2014.01); B42D 25/46 (2014.01);
U.S. Cl.
CPC ...
B42D 25/36 (2014.10); B42D 15/00 (2013.01); B42D 25/369 (2014.10); B42D 25/382 (2014.10); B42D 25/387 (2014.10); B42D 25/45 (2014.10); B42D 25/475 (2014.10); B42D 25/455 (2014.10); B42D 25/46 (2014.10);
Abstract
A security element for securing value documents comprises a first polymer containing a feature substance, which is at least partially surrounded by a second polymer, wherein the first polymer is a hydrophobic, water-insoluble polymer which, at an elevated pH value and at elevated ambient temperature at a treatment duration of less than 60 minutes can be converted into a hydrophilic, water-soluble polymer. The security elements also contains a second polymer, which is a hydrophilic, water-soluble polymer, wherein the elevated pH value is greater than 12 and the elevated ambient temperature is greater than 90° C.