G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 5/30 (2006.01) B41M 3/14 (2006.01) B42D 15/00 (2006.01) G07D 7/12 (2006.01)
Patent
CA 2445080
The invention relates to a birefringent marking comprising a liquid crystal material. The invention further relates to method of providing such a birefringent marking and to the use of the birefringent marking for decorative or security applications.
L'invention concerne un marquage biréfringent renfermant un matériau à cristaux liquides. Elle concerne également un procédé de production d'un tel marquage biréfringent, ainsi que son utilisation dans applications de décoration ou de sécurité.
Graham Donald G.
Hammond-Smith Robert
Kuntz Matthias
Patrick John
Riddle Rodney
Fetherstonhaugh & Co.
Merck Patent Gesellschaft Mit Beschraenkter Haftung
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