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:
Sep. 28, 2021
Filed:
May. 12, 2017
3m Innovative Properties Company, St. Paul, MN (US);
Justin M. Johnson, Hudson, WI (US);
James W. Howard, Circle Pines, MN (US);
James B. Snyder, Minneapolis, MN (US);
Kui Chen-Ho, Woodbury, MN (US);
Suman K. Patel, Woodbury, MN (US);
Travis L. Potts, Woodbury, MN (US);
Carla H. Barnes, St. Paul, MN (US);
Tadesse G. Nigatu, Cottage Grove, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
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.