发明名称 |
SECURITY DEVICE AND ITS PRODUCTION METHOD |
摘要 |
A security device comprises two or more regions ( 1, 2 ). Each region ( 1, 2 ) contains a material or combination of materials wherein the two or more regions exhibit substantially the same visible appearance under first viewing conditions and different visible appearances under second viewing conditions, the second viewing conditions. The second viewing conditions comprise a combination of a) visible light and b) substantially any UV wavelength. |
申请公布号 |
EP1567358(B1) |
申请公布日期 |
2008.10.29 |
申请号 |
EP20030772406 |
申请日期 |
2003.11.06 |
申请人 |
DE LA RUE INTERNATIONAL LIMITED |
发明人 |
BARTHRAM, ANITA MARIE;SUGDON, MATTHEW CHARLES |
分类号 |
B41M3/14 |
主分类号 |
B41M3/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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