EP 4149770 A1 20230322 - SECURITY ELEMENT
Title (en)
SECURITY ELEMENT
Title (de)
SICHERHEITSELEMENT
Title (fr)
ÉLÉMENT DE SÉCURITÉ
Publication
Application
Priority
- AT 504082020 A 20200512
- EP 2021062631 W 20210512
Abstract (en)
[origin: WO2021228943A1] The invention relates to a security element which comprises a substrate and an optically variable multilayer structure and which can be written by the action of a laser, the multilayer structure comprising a spacer layer and a phase change-material layer. The security element thus allows the generation of high-resolution two-color image information which is more difficult to reproduce.
IPC 8 full level
B42D 25/36 (2014.01); B42D 25/41 (2014.01)
CPC (source: AT EP)
B42D 25/29 (2014.10 - AT); B42D 25/30 (2014.10 - AT); B42D 25/36 (2014.10 - EP); B42D 25/41 (2014.10 - EP)
Citation (search report)
See references of WO 2021228943A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
WO 2021228943 A1 20211118; AT 523060 A4 20210515; AT 523060 B1 20210515; EP 4149770 A1 20230322
DOCDB simple family (application)
EP 2021062631 W 20210512; AT 504082020 A 20200512; EP 21726868 A 20210512