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:
Feb. 18, 2014
Filed:
May. 02, 2008
Applicants:
Sushil Bhattacharjee, Renens, CH;
Alexandre Gret, Spiegel bei Bern, CH;
Hansjorg Klock, Rufenacht, CH;
Edward John Brindley, Frimley, GB;
Inventors:
Sushil Bhattacharjee, Renens, CH;
Alexandre Gret, Spiegel bei Bern, CH;
Hansjorg Klock, Rufenacht, CH;
Edward John Brindley, Frimley, GB;
Assignee:
De La Rue International Limited, Hampshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01); G06K 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of determining the authenticity of a document of value provided with a watermark pattern, the method comprising determining whether the watermark pattern exhibits a discontinuity.