Patent · US Active

Authenticity feature in the form of luminescent substances

US9878573B2 · kind B2 · utility

2Cited by

6References

27Claims

0Family size

Assignee

GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH · DE

Inventors

Thomas Giering · Kirchseeon, DE
Peter Kersten · Leonberg, DE
Ulrich Magg · Feldgeding, DE
Gregor Grauvogl · Hersbruck, DE

Key dates

Filing date	Dec 15, 2010
Grant date	Jan 30, 2018
Priority date	—
Expiry date	Jan 18, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01N2201/06113
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a security element having at least two luminescent substances. The invention starts out from a security element having at least two luminescent substances, whereby the security element has a first and a second luminescent substance which have a substantially identical, joint emission band, whereby at least the first or the second luminescent substance, or both luminescent substances, have at least one excitation band that leads to an emission at the joint emission band only in the case of the first or the second luminescent substance.

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