Patent · US Active

Security element having a laser marking

US8528941B2 · kind B2 · utility

20Cited by

4References

28Claims

0Family size

Assignee

GIESECKE & DEVRIENT GMBH · DE

Inventors

Walter Dorfler · Munich, DE
Michael Bauer · Gernlinden, DE

Key dates

Filing date	Apr 26, 2007
Grant date	Sep 10, 2013
Priority date	—
Expiry date	Nov 21, 2030

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB42D25/405
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

The present invention relates to a security element for security papers, value documents and the like, having a laser-markable transparent or translucent marking layer into which, through the action of laser radiation, visually perceptible identifiers are introduced in the form of patterns, letters, numbers and/or images. The identifiers each comprise a lamellar structure composed of a plurality of substantially parallel lamella that extend into the depth of the marking layer and include the parameters color, width, height, lateral orientation, tilt angle and/or spacing.

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