Patent · US Active

Multi-luminescent security element and value or security product containing said security element

US11879083B2 · kind B2 · utility

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0References

11Claims

0Family size

Assignee

BUNDESDRUCKEREI GMBH · DE

Inventors

Christian Kunath · Dresden, DE
Per Krüger · Berlin, DE
Alexander Mombrée · Berlin, DE
Christoph Von Czapiewski · Berlin, DE

Key dates

Filing date	Jan 3, 2022
Grant date	Jan 23, 2024
Priority date	—
Expiry date	Apr 22, 2042

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09J2203/338
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

In order to increase the security of value or security documents 100, a multi-luminescent security element 400 is provided which contains at least one first luminescence means 510 and at least one second luminescence means 520. The first luminescence means 510 can be excited under first excitation conditions Sp-1 for the purpose of luminescence, and the second luminescence means 520 can be excited under second excitation conditions Sp-2 for the purpose of luminescence, said second excitation conditions Sp-2 differing from the first excitation conditions Sp-1. The multi-luminescent security element 400 is additionally equipped with at least one absorber means 600 which prevents an excitation of the at least one first luminescence means 510 under the second excitation conditions Sp-2 for the purpose of luminescence.

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