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:
Apr. 05, 2005
Filed:
Feb. 14, 2002
Myron Seto, Lausanne, CH;
Thomas Tiller, Bussigny, CH;
Edgar Müller, Fribourg, CH;
Claude-alain Despland, Lausanne, CH;
Myron Seto, Lausanne, CH;
Thomas Tiller, Bussigny, CH;
Edgar Müller, Fribourg, CH;
Claude-Alain Despland, Lausanne, CH;
SICPA Holding SA, Prilly, CH;
Abstract
The invention discloses magnetic OVP, said pigment consisting of thin-layer flakes having a basic metal-dielectric-metal structure to result in a viewing-angle dependent color appearance, and having, in addition to said viewing-angle dependent color appearance, incorporated magnetic properties, to make them distinguishable from OVP of similar appearance but not having said magnetic properties. The invention discloses as well methods for obtaining such pigments and the use of such pigments as security elements in inks, coatings and articles.