Data carrier having an optically variable element and methods for producing it
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Oct 11, 2005
Grant Date -
Feb 14, 2002
app pub date -
Oct 19, 2001
filing date -
Sep 28, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a system comprising a series of data carriers, in particular identity cards, papers of value or the like, whereby the data carriers belonging to the system exhibit diffraction structures containing standard information and parts of the series are changed by additional measures in the area of the diffraction structures or combined with other elements and they differ from the rest of the series in optically recognizable fashion, whereby the change in the diffraction structures and/or the combination with other elements convey an esthetic overall impression and the change and/or combination with the other elements cannot be undone without destruction of the diffraction structures.
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