| 发明名称 |
A data carrier having an optically variable element and methods for producing it |
| 摘要 |
<p>Non-holographic data is produced in suitable layers of the optically-variable element, using a laser. The recording takes the form of a refractive structure disturbance. - An INDEPENDENT CLAIM is included for the corresponding method.</p> |
| 申请公布号 |
SG46291(A1) |
申请公布日期 |
1998.02.20 |
| 申请号 |
SG19960002181 |
申请日期 |
1990.09.27 |
| 申请人 |
GAO GESELLSCHAFT FUR AUTOMATION UND ORGANISATION MBH |
发明人 |
HECKENKAMP CHRISTOPH;STENZEL GERHARD;WITTICH KAUL |
| 分类号 |
B42D15/00;B42D25/328;B44F1/00;G02B5/18;G03H1/18;G06K19/00;G06K19/06;G06K19/08;G06K19/10;G06K19/14;G06K19/16;(IPC1-7):G06K19/00 |
主分类号 |
B42D15/00 |
| 代理机构 |
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