Expression codes for microparticle marks based on signature strings
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United States of America Patent
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Oct 11, 2011
Grant Date -
Dec 30, 2010
app pub date -
Mar 13, 2007
filing date -
Mar 13, 2006
priority date (Note) -
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Abstract
A system, apparatus, and method for identifying and authenticating articles using expression codes obtained from marks incorporating microparticles on or in articles, article packaging, or article labeling where the expression codes are based on signature strings generated relative to attributes of valid individual microparticles. The system, apparatus, and method can also enable the serialization of articles over and above the code-formulation that is achievable with multi-layered color-coded microparticles or single expression microparticles.
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