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:
Dec. 28, 2010
Filed:
Aug. 30, 2006
Applicant:
Jürgen Schützmann, Pfaffenhofen, DE;
Inventor:
Jürgen Schützmann, Pfaffenhofen, DE;
Assignee:
Giesecke & Devrient GmbH, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Forged bank notes are no longer reliably distinguishable from bank note originals (BN) on the basis of their luminescent fibers. According to the invention, the excitation of the fibers to luminescence is effected by means of excitation radiation (S) from the restricted wavelength range from 600 to 640 nm or from 520 to 550 nm, since the forgeries do not luminescence in this range but the originals luminescence red. Detection is therefore effected in the wavelength range from 640 to 700 nm.