Invention Grant
- Patent Title: Paired optically variable security element
- Patent Title (中): 配对光学可变安全元件
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Application No.: US13122285Application Date: 2009-09-16
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Publication No.: US08998265B2Publication Date: 2015-04-07
- Inventor: Anton Bleikolm , Pierre Degott , Edgar Mueller
- Applicant: Anton Bleikolm , Pierre Degott , Edgar Mueller
- Applicant Address: CH Prilly
- Assignee: Sicpa Holding SA
- Current Assignee: Sicpa Holding SA
- Current Assignee Address: CH Prilly
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: WOPCT/IB2008/002620 20081003
- International Application: PCT/EP2009/062021 WO 20090916
- International Announcement: WO2010/037638 WO 20100408
- Main IPC: B42D15/00
- IPC: B42D15/00 ; B42D15/10 ; G02B5/28 ; B44F1/10 ; B42D25/29

Abstract:
Paired optically variable security element which includes first and second optically variable thin-film multilayer interference devices in the form of optically variable foils or of printings made with inks having optically variable interference pigments. The first and second interference devices exhibit spectral matching at a determined angle of incidence. Sets of optically variable devices and of coating compositions include optically variable pigments for the production of the paired optically variable security element. Moreover, the security element can be used for the protection of documents and goods, and security documents and goods.
Public/Granted literature
- US20110215562A1 PAIRED OPTICALLY VARIABLE SECURITY ELEMENT Public/Granted day:2011-09-08
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