Patent · US Active

Security element for value documents

US9911074B2 · kind B2 · utility

2Cited by

11References

15Claims

0Family size

Assignee

GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH · DE

Inventors

Michael Rahm · Bad Tölz, DE
Manfred Heim · Munich, DE
Andreas Rauch · Ohlstadt, DE
Jurgen Schutzmann · Brackenheim, DE
Winfried Hoffmuller · Bad Tölz, DE

Key dates

Filing date	Apr 4, 2014
Grant date	Mar 6, 2018
Priority date	—
Expiry date	Apr 29, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG06K19/06187
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The invention concerns a security element having a magnetic coding consisting of magnetic coding elements. At least one of the magnetic coding elements has a grid-shaped magnetic region which is formed by a plurality of mutually parallel grid strips made of magnetic material which respectively have a magnetic anisotropy. The grid strips lead, through their magnetic anisotropy, to the magnetization direction of the coding element being able to differ from the direction of the applied magnetic field. Since the resultant magnetic signals that the grid-shaped magnetic regions deliver cannot be simulated by conventional magnetic regions, said coding elements increase the anti-forgery security of the security element.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.