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. 29, 2025
Filed:
Jul. 26, 2022
Leuchtstoffwerk Breitungen Gmbh, Breitungen, DE;
Sensor-instruments Entwicklungs- Und Vertriebs-gmbh, Thurmansbang, DE;
Benedikt Daumann, Wallersdorf, DE;
Thomas Kaib, Eisenach, DE;
Thomas Bitzer, Mönchengladbach, DE;
Dominik Uhlich, Bad Liebenstein, DE;
Walter Braumandl, Thurmansbang, DE;
SENSOR-INSTRUMENTS ENTWICKLUNGS- UND VERTRIBES-GMBH, Thurmansbang, DE;
LEUCHTSTOFFWERK BREITUNGEN GMBH, Breitungen, DE;
Abstract
A method for determining the authenticity of an object by marking the object with a first luminescent material with a first decay behavior over time, marking the object with a second luminescent material with a second decay behavior that differs from the first decay behavior, excitation of the luminescent materials with a light pulse, measuring the afterglow intensities of both luminescent materials temporally after the excitation with the light pulse, forming a difference signal or identity signal from the afterglow intensities measured over the elapsed time, determining the time of a zero crossing of the difference signal or the time of the identity signal of a comparator, comparing the time determined by the zero crossing or by the identity signal with a setpoint value.