Invention Grant
- Patent Title: Security element and method for producing the same
- Patent Title (中): 安全要素及其制造方法
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Application No.: US11573506Application Date: 2005-08-08
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Publication No.: US08622435B2Publication Date: 2014-01-07
- Inventor: Theodor Burchard , Winfried Hoffmuller , Thorsten Pillo , Manfred Heim , Friedrich Kretschmar , Jurgen Ruck
- Applicant: Theodor Burchard , Winfried Hoffmuller , Thorsten Pillo , Manfred Heim , Friedrich Kretschmar , Jurgen Ruck
- Applicant Address: DE Munich
- Assignee: Giesecke & Devrient GmbH
- Current Assignee: Giesecke & Devrient GmbH
- Current Assignee Address: DE Munich
- Agency: Lathrop & Gage LLP
- Priority: DE102004039355 20040812
- International Application: PCT/EP2005/008568 WO 20050808
- International Announcement: WO2006/018172 WO 20060223
- Main IPC: B42D15/00
- IPC: B42D15/00 ; B42D15/10
Abstract:
The present invention relates to a security element (30) for securing valuable articles, having a first layer (13), composed of cholesteric liquid crystal material, that is present at least in some areas, a second layer (14), composed of liquid crystal material, that is present at least in some areas, and a further layer (22), having a machine-readable feature, that is present at least in some areas and that is covered at least in some areas by the first and second layer composed of liquid crystal material.
Public/Granted literature
- US20080054621A1 Security Element and Method for Producing the Same Public/Granted day:2008-03-06
Information query
