Structure comprising a fibrous material substrate and method for authenticating and/or identifying such a structure
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United States of America Patent
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Oct 15, 2013
Grant Date -
Feb 5, 2009
app pub date -
Sep 15, 2006
filing date -
Sep 15, 2005
priority date (Note) -
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Abstract
The invention concerns a structure (1) comprising: a least one fibrous material substrate (2), optionally at least one surface layer deposited on one surface of the substrate, a plurality of heterogeneous elements (3) of the substrate and/or of the optional surface layer, dispersed randomly within the substrate and/or the optional surface layer, at least one authenticating and/or identifying information having a relationship with at least one spatial and/or physical feature of part at least of said heterogeneous elements.
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