Invention Grant
- Patent Title: Security structure including nematic liquid crystals
- Patent Title (中): 安全结构包括向列液晶
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Application No.: US12746013Application Date: 2008-12-17
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Publication No.: US08397995B2Publication Date: 2013-03-19
- Inventor: Michel Camus
- Applicant: Michel Camus
- Applicant Address: FR Paris
- Assignee: Arjowiggins Security
- Current Assignee: Arjowiggins Security
- Current Assignee Address: FR Paris
- Agency: Oliff & Berridge, PLC
- Priority: FR0760336 20071224
- International Application: PCT/FR2008/052335 WO 20081217
- International Announcement: WO2009/081035 WO 20090702
- Main IPC: G06K19/02
- IPC: G06K19/02 ; G06K19/00
Abstract:
A security structure including: a first region that is at least partially reflective and of low opacity; a second region that is at least partially reflective and of higher opacity than the first region; and a layer of a coating presenting birefringence properties, covering the first and second regions, at least in part.
Public/Granted literature
- US20100276488A1 SECURITY STRUCTURE INCLUDING NEMATIC LIQUID CRYSTALS Public/Granted day:2010-11-04
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