发明名称 Optically variable marking
摘要 The invention relates to an optically variable marking comprising a semiopaque substrate with a first surface that is covered with an optically variable layer that is for example a liquid crystal polymer layer or a layer comprising pearlescent pigments, and a second surface that is partially covered with a metal layer in the shape of a pattern, to methods of its preparation and to its use for decorative or security applications.
申请公布号 EP1281538(A3) 申请公布日期 2004.01.28
申请号 EP20020012684 申请日期 2002.06.07
申请人 MERCK PATENT GMBH 发明人 KUNTZ, MATTHIAS, DR.;DELP, REINER;RIDDLE, RODNEY;PATRICK, JOHN;HAMMOND-SMITH, ROBERT
分类号 B42D15/10 主分类号 B42D15/10
代理机构 代理人
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