Patent · US Active

Optically variable security threads and stripes

US10166808B2 · kind B2 · utility

1Cited by

28References

19Claims

0Family size

Assignees

SICPA HOLDING SA · CH
CHINA BANKNOTE SICPA SECURITY INK CO., LTD. · CN

Inventors

Gebhard Ritter · Ingelheim am Rhein, DE
Pierre Degott · Crissier, CH
Xiang Li · Shanghai, CN
Fang Yuan · Ningbo City, CN

Key dates

Filing date	Dec 11, 2013
Grant date	Jan 1, 2019
Priority date	—
Expiry date	Mar 8, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB42D25/45
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

Optically variable security threads or stripes to be incorporated into or onto security documents, relate to the field of the protection of value documents and value commercial goods against counterfeit and illegal reproduction. The security threads or stripes comprise a) an optically variable layer; b) a color constant layer having a color matching the color impression of the optically variable layer at a viewing angle; c) a holographic metallic layer; and d) and a transparent substrate, wherein the optically variable layer, the color constant layer and the holographic metallic layer are at least partially jointly visible from at least one side of the security thread or stripe.

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