| 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.
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| 申请公布号 |
US7033653(B2) |
申请公布日期 |
2006.04.25 |
| 申请号 |
US20030475715 |
申请日期 |
2003.10.23 |
| 申请人 |
MERCK PATENT GMBH |
发明人 |
KUNTZ MATTHIAS;HAMMOND-SMITH ROBERT;RIDDLE RODNEY;PATRICK JOHN;GRAHAM DONALD |
| 分类号 |
B42D15/10;C09K19/52;B41M1/14;B41M3/00;B41M3/14;B42D1/00;B42D15/00;G02B5/30;G02F1/13363 |
主分类号 |
B42D15/10 |
| 代理机构 |
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代理人 |
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