Labeling and authentication of metal objects
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United States of America Patent
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Issued Date -
Jan 27, 2005
app pub date -
Jun 17, 2004
filing date -
Jun 17, 2003
priority date (Note) -
Abandoned
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Abstract
Metal objects (e.g., jewelry) are labeled with encoded metal nanoparticles for anti-counterfeiting and authentication purposes. Particles are attached by one a variety of different chemical or film-forming methods and subsequently read and decoded by optical microscopy for object identification.
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