EP 1258006 A2 20021120 - MULTI-LAYER POLYMERIC FILM AND THE USE THEREOF
Title (en)
MULTI-LAYER POLYMERIC FILM AND THE USE THEREOF
Title (de)
MEHRSCHICHTIGER KUNSTSTOFFFILM UND SEINE VERWENDUNG
Title (fr)
FILM POLYMERE A COUCHES MULTIPLES ET UTILISATION RELATIVE
Publication
Application
Priority
- GB 0004170 A 20000222
- US 0105903 W 20010222
Abstract (en)
[origin: WO0162496A2] The use of a multilayer film to store or retrieve information, said information being correlated to the multilayer structure of the film, and said multilayer film comprising at least two different types of layer, wherein each type of layer exhibits a different optical property and wherein the multilayer film comprises a plurality of layers of each of at least two of the different types of layer; a method of storing information, a method of retrieving stored information and a method of protecting against counterfeiting or fraud, which method utilises said multilayer film.
IPC 1-7
IPC 8 full level
B32B 7/02 (2006.01); B32B 7/023 (2019.01); G06K 7/14 (2006.01); G06K 19/06 (2006.01); G06K 19/10 (2006.01)
CPC (source: EP KR US)
B32B 7/023 (2018.12 - EP KR US); B32B 27/00 (2013.01 - KR)
Citation (search report)
See references of WO 0162496A2
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)
WO 0162496 A2 20010830; WO 0162496 A3 20020418; CN 1500271 A 20040526; EP 1258006 A2 20021120; GB 0004170 D0 20000412; JP 2004503393 A 20040205; KR 100706143 B1 20070411; KR 20020072591 A 20020916
DOCDB simple family (application)
US 0105903 W 20010222; CN 01808030 A 20010222; EP 01914465 A 20010222; GB 0004170 A 20000222; JP 2001561530 A 20010222; KR 20027010891 A 20020821