EP 2225417 A2 20100908 - SAFETY STRUCTURE COMPRISING NEMATIC LIQUID CRYSTALS
Title (en)
SAFETY STRUCTURE COMPRISING NEMATIC LIQUID CRYSTALS
Title (de)
SICHERHEITSSTRUKTUR MIT NEMATISCHEN FLÜSSIGKRISTALLEN
Title (fr)
STRUCTURE DE SECURITE COMPORTANT DES CRISTAUX LIQUIDES NEMATIQUES
Publication
Application
Priority
- FR 2008052335 W 20081217
- FR 0760336 A 20071224
Abstract (en)
[origin: WO2009081035A2] The invention relates to a safety structure (10) that comprises: a first region (14) that is at least partially reflecting and has a reduced opacity; a second region (15) that is at least partially reflecting and has a higher opacity than the first one; a layer (18) of a coating having birefringence properties and covering at least partially the first and second regions.
IPC 8 full level
D21H 21/40 (2006.01)
CPC (source: EP US)
D21H 21/40 (2013.01 - EP US)
Citation (search report)
See references of WO 2009081035A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
FR 2925534 A1 20090626; FR 2925534 B1 20100212; BR PI0821705 A2 20150616; CA 2709826 A1 20090702; EP 2225417 A2 20100908; EP 2225417 B1 20140618; US 2010276488 A1 20101104; US 8397995 B2 20130319; WO 2009081035 A2 20090702; WO 2009081035 A3 20091008
DOCDB simple family (application)
FR 0760336 A 20071224; BR PI0821705 A 20081217; CA 2709826 A 20081217; EP 08863469 A 20081217; FR 2008052335 W 20081217; US 74601308 A 20081217