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1. (WO2017197223) COUNTERFEIT DETECTION OF AN OPTICALLY ACTIVE ARTICLE USING SECURITY ELEMENTS

Pub. No.:    WO/2017/197223    International Application No.:    PCT/US2017/032340
Publication Date: Fri Nov 17 00:59:59 CET 2017 International Filing Date: Sat May 13 01:59:59 CEST 2017
IPC: B60R 13/10
B60R 25/00
G09F 7/00
G08G 1/017
G09F 3/02
Applicants: 3M INNOVATIVE PROPERTIES COMPANY
Inventors: JOHNSON, Justin M.
HOWARD, James W.
SNYDER, James B.
CHEN-HO, Kui
PATEL, Suman K.
POTTS, Travis L.
BARNES, Carla H.
NIGATU, Tadesse G.
Title: COUNTERFEIT DETECTION OF AN OPTICALLY ACTIVE ARTICLE USING SECURITY ELEMENTS
Abstract:
In some examples, an optically active article includes a retroreflective substrate; and at least one security element disposed at the retroreflective substrate; an article message disposed at the retroreflective substrate, and wherein the at least one security element comprises validation information that is detectable outside a visible light spectrum, and wherein a combination of the article message and the validation information of the at least one security element indicates whether the optically active article is counterfeit.