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:
Aug. 09, 2005
Filed:
Aug. 30, 2002
Anton Bleikolm, Ecublens, CH;
Pierre Degott, Crissier, CH;
Claude-alain Despland, Lausanne, CH;
Edgar Müller, Fribourg, CH;
Anton Bleikolm, Ecublens, CH;
Pierre DeGott, Crissier, CH;
Claude-Alain Despland, Lausanne, CH;
Edgar Müller, Fribourg, CH;
SICPA Holding S.A., Prilly, CH;
Abstract
The invention relates to an ink set comprising a plurality of inks of a first and of a second group, having different colors. Inks of said first group comprise a visible colorant and an additional IR-absorbing compound (IR-taggant) which has an absorption peak at a predetermined wavelength in the near infrared. Inks of said second group comprise a visible colorant which has at the same time an infrared absorption peak at the same wavelength as that of the IR-taggant used in the inks of the first group. Preferred embodiment is a four-color process ink set comprising an IR feature.