Microstructured taggant particles, applications and methods of making the same
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United States of America Patent
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Oct 30, 2007
Grant Date -
Apr 8, 2004
app pub date -
May 19, 2003
filing date -
May 17, 2002
priority date (Note) -
Expired
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Abstract
Microstructured taggant particles, their applications and methods of making the same are described. Precisely formed taggant particles can be formed, in the range of 500.mu. and smaller, from either inert polymers or biodegradable materials bearing information indicia, such as through specific shape, size, color, reflectivity, refractive index, surface geometry, imprinting, optical effect or properties, and electromagnetic properties, to uniquely tag, identify or authenticate articles.
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