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:
Jun. 11, 2019
Filed:
Feb. 10, 2017
Articles with confounded emission characteristics and methods and apparatus for their authentication
Honeywell International Inc., Morris Plains, NJ (US);
William Ross Rapoport, Bridgewater, NJ (US);
Carsten Lau, Garbsen, DE;
James Kane, Lawrenceville, NJ (US);
HONEYWELL INTERNATIONAL INC., Morris Plains, NJ (US);
Abstract
Embodiments include articles, authentication methods and apparatus, and article manufacturing methods. An article includes a substrate with a first luminescent taggant, and an extrinsic feature with a second luminescent taggant, which is positioned proximate a portion of the article surface. The first and second taggants produce emissions in overlapping emission bands as a result of exposure to excitation energy. Above the extrinsic feature, the substrate and extrinsic feature emissions combine in the overlapping emission band to produce 'confounded' emissions that are distinguishable from the substrate emissions taken alone. An authentication system determines whether, in a region corresponding to a 'substrate-only' region of an authentic article, emissions having first emission characteristics are detected in the overlapping emission band. The system also determines whether, in a region corresponding to an “extrinsic feature” region of an authentic article, the confounded emissions are detected in the overlapping emission band.