Liquid crystal cells – elements and systems – Nominal manufacturing methods or post manufacturing...
Reexamination Certificate
2003-08-08
2009-02-24
Dudek, James A (Department: 2871)
Liquid crystal cells, elements and systems
Nominal manufacturing methods or post manufacturing...
Reexamination Certificate
active
07495740
ABSTRACT:
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.
REFERENCES:
patent: 4514085 (1985-04-01), Kaye
patent: 6806930 (2004-10-01), Moia
patent: 2003/0035191 (2003-02-01), Moia
patent: 2003/0178609 (2003-09-01), Hammond-Smith et al.
patent: 1120737 (2001-08-01), None
patent: 1335217 (2003-08-01), None
patent: 2357061 (2001-06-01), None
patent: WO 02085642 (2002-10-01), None
Hammond-Smith Robert
Kuntz Matthias
Patrick John
Riddle Rodney
Schmitt Peter
Dudek James A
Merck Patent GmbH
Millen White Zelano & Branigan P.C.
LandOfFree
Birefringent marking does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Birefringent marking, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Birefringent marking will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4064068