G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 5/30 (2006.01) B41M 3/14 (2006.01) B42D 15/10 (2006.01) G07D 7/12 (2006.01)
Patent
CA 2498417
The invention relates to a method of preparing a birefringent marking by printing a polymerisable liquid crystal material onto at least one side of a substrate and polymerising the liquid crystal material, to a birefringent marking obtained by this method, and to the use of the birefringent marking for decorative, security, authentification and identification applications.
Cette invention concerne un procédé de préparation d'un marquage biréfringent consistant à imprimer un matériau à cristaux liquides polymérisable sur au moins un côté d'un substrat puis à polymériser le matériau à cristaux liquides. Cette invention concerne également un marquage biréfringent obtenu au moyen de ce procédé ainsi que l'utilisation de ce marquage biréfringent dans des applications de décoration, de sécurité, d'authentification et d'identification.
Hammond-Smith Robert
Kuntz Matthias
Patrick John
Riddle Rodney
Schmelz Michael
Fetherstonhaugh & Co.
Merck Patent Gesellschaft Mit Beschraenkter Haftung
Metronic Ag
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