EP 1281538 A3 20040128 - Optically variable marking
Title (en)
Optically variable marking
Title (de)
Optisch variable Markierung
Title (fr)
Marquage optiquement variable
Publication
Application
Priority
- EP 02012684 A 20020607
- EP 01114895 A 20010702
Abstract (en)
[origin: EP1281538A2] The invention relates to an optically variable marking comprising a semiopaque substrate with a first surface that is covered with an optically variable layer that is for example a liquid crystal polymer layer or a layer comprising pearlescent pigments, and a second surface that is partially covered with a metal layer in the shape of a pattern, to methods of its preparation and to its use for decorative or security applications.
IPC 1-7
IPC 8 full level
B42D 15/10 (2006.01)
CPC (source: EP US)
B42D 25/00 (2014.10 - EP); B42D 25/328 (2014.10 - US); B42D 25/333 (2014.10 - US); B42D 25/364 (2014.10 - US); B42D 2033/26 (2022.01 - EP)
Citation (search report)
- [YD] US 5678863 A 19971021 - KNIGHT MALCOLM ROBERT MURRAY [GB], et al
- [Y] EP 0678400 A1 19951025 - GIESECKE & DEVRIENT GMBH [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 02012684 A 20020607