Patent · US Active

Method and device for testing a substrate with a luminescent substance

US12387546B2 · kind B2 · utility

0Cited by

2References

18Claims

0Family size

Assignee

GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH · DE

Inventors

Wolfgang Rauscher · Parkstetten, DE
Peter Kersten · Leonberg, DE
Thomas Giering · Kirchseeon, DE

Key dates

Filing date	Apr 28, 2021
Grant date	Aug 12, 2025
Priority date	—
Expiry date	Nov 26, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG07D2207/00
WIPO fieldControl
WIPO sectorInstruments

Abstract

A method is provided for checking a substrate with a specified luminescent substance incorporated and/or applied areally. A substrate luminescent characteristic value for the substrate is ascertained, for which purpose a number N of luminescence intensity values are captured at respectively different locations on the value document, and the substrate luminescence characteristic value is ascertained in dependence on a rank order of the luminescence intensity values. It can be checked whether the substrate luminescence characteristic value meets a specified criterion.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.