Patent · US Active

Paired optically variable security element

US8998265B2 · kind B2 · utility

1Cited by

6References

7Claims

0Family size

Assignee

SICPA HOLDING SA · CH

Inventors

Anton Bleikolm · Ecublens, CH
Pierre Degott · Crissier, CH
Edgar Mueller · Heroldsbach, DE

Key dates

Filing date	Sep 16, 2009
Grant date	Apr 7, 2015
Priority date	—
Expiry date	Jul 5, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T156/10
WIPO fieldOther consumer goods
WIPO sectorOther fields

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.