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:
Nov. 21, 2023
Filed:
Feb. 10, 2020
Sicpa Holding SA, Prilly, CH;
Todor Dinoev, Chavannes-près-Renens, CH;
Jean-Luc Dorier, Bussigny, CH;
Edmund Halasz, Orbe, CH;
Evgeny Loginov, Renens, CH;
Claude-Alain Despland, Prilly, CH;
Andrea Callegari, Chavannes-près-Renens, CH;
SICPA HOLDING SA, Prilly, CH;
Abstract
The invention relates to a method of authenticating a magnetically induced mark applied on a substrate including magnetically oriented partially reflective platelet-shaped magnetic or magnetizable pigment particles, with a portable device equipped with a light source operable to deliver visible light, an imager, a processor and a memory, the method comprising calculating, with the processor, a corresponding average intensity I of the light reflected by the partially reflective platelet-shaped magnetic or magnetizable pigment particles and collected by the imager at corresponding viewing angle θ, storing the calculated average intensities of the reflected light and corresponding viewing angles to obtain a reflected light intensity curve I(θ), comparing the stored reflected light intensity curve I(θ) with a stored reference reflected light intensity curve I(θ) for said magnetically induced mark, and determining whether the magnetically induced mark is genuine based on a result of the comparison.