发明授权
- 专利标题： Security document having a security thread embedded therein
- 专利标题（中）： 具有嵌入其中的安全线程的安全文档
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申请号： US966546申请日： 1992-10-26
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公开(公告)号： US5324079A公开(公告)日： 1994-06-28
- 发明人: Wittich Kaule , Wilhelm Ilgmann , Gerhard Schwenk , Gerhard Stenzel
- 申请人： Wittich Kaule , Wilhelm Ilgmann , Gerhard Schwenk , Gerhard Stenzel
- 申请人地址： DEX
- 专利权人： GAO Gesellschaft fur Automation und Organisation mbH
- 当前专利权人： GAO Gesellschaft fur Automation und Organisation mbH
- 当前专利权人地址： DEX
- 优先权： DEX3843077 19881221
- 主分类号： B42D15/00
- IPC分类号： B42D15/00 ; B42D25/355 ; D21H21/48 ; G07D7/026 ; G07D7/04 ; G07D7/20 ; B32B3/16 ; B32B15/08 ; B42D15/10
摘要：
A security element that can be embedded in the form of a thread or strip in a security document, in particular a paper of value, is composed of two carrier sheets, each of which bears each of the marking substances allowing for detection of authenticity. The two carrier sheets are put together in such a way that the marking substances to be protected from mechanical abrasion and other external influences come to lie on the inside.The thread not only offers special protection for the marking substances, but can also be embedded in the paper substance easily due to its symmetrical structure and without showing any tendency to curl.
公开/授权文献
- US4208395A Removal of sulfur dioxide from flue gas 公开/授权日：1980-06-17
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