Title:
機密保護要素
Document Type and Number:
Japanese Patent JP2011504520
Kind Code:
A
Abstract:
The present invention is in the field of security documents, more particularly in the field of security elements aimed to protect security documents against copying (illegal reproduction) and counterfeiting. It discloses a security element having a coating layer(s) which changes its visual appearance after irradiation with light, especially with UV light and reverts back to the original state within a few seconds. Security documents comprising said security element, as well as a method for producing said security element, are also disclosed.
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Inventors:
Hans Reichert
Veronique Hull-Goal
Civil soder
Veronique Hull-Goal
Civil soder
Application Number:
JP2010530443A
Publication Date:
February 10, 2011
Filing Date:
October 22, 2008
Export Citation:
Assignee:
BASF SE
International Classes:
C09D11/00; B32B7/02; B32B27/20; C09B67/20; C09D7/12; C09D201/00; C09K11/55; C09K11/56; C09K11/59; C09K11/62; C09K11/63; C09K11/64; C09K11/66; C09K11/67; C09K11/70; C09K11/84; G07D7/12
Domestic Patent References:
| JP2005521798A | 2005-07-21 | |||
| JP2002500244A | 2002-01-08 | |||
| JP2003253261A | 2003-09-10 | |||
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Foreign References:
| US20060237541A1 | 2006-10-26 | |||
| US20050096420A1 | 2005-05-05 | |||
| US20050120917A1 | 2005-06-09 | |||
| US4020231A | 1977-04-26 |
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard
Toshiomi Yamazaki
Takuya Kuno
Hiroshi Sugimoto
Takahashi
Kimihiro Hoshi
Hiroyasu Ninomiya
Einzel Felix-Reinhard