发明名称 BIREFRINGENT MARKING
摘要 The invention relates to a birefringent marking comprising a liquid crystal material. The invention further relates to method of providing such a birefringent marking and to the use of the birefringent marking for decorative or security applications.
申请公布号 EP1381520(B1) 申请公布日期 2006.08.23
申请号 EP20020730076 申请日期 2002.03.28
申请人 MERCK PATENT GMBH 发明人 KUNTZ, MATTHIAS;HAMMOND-SMITH, ROBERT;PATRICK, JOHN;GRAHAM, DONALD, G.;RIDDLE, RODNEY
分类号 B42D1/00;B41M1/14;B41M3/00;B41M3/14;B42D15/00;B42D25/29;B42D25/324;B42D25/328;B42D25/36;B42D25/364;B42D25/378;G02B5/30 主分类号 B42D1/00
代理机构 代理人
主权项
地址