Phosphorescent compositions and methods for identification using the same
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United States of America Patent
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Jun 4, 2013
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app pub date -
Jun 15, 2011
filing date -
Sep 15, 2006
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Abstract
Methods of identification or detection utilizing photoluminescent compositions containing photoluminescent phosphorescent materials and photoluminescent fluorescent materials whose emission signature lies partly or fully in the infrared region of the electromagnetic spectrum onto or into objects for the purpose of identifying or detecting the objects. Methods of identification or detection utilizing photoluminescent compositions which are high in intensity and high in persistence. Methods wherein the identifying markings can be clandestine or otherwise, and methods wherein activation and detection can be decoupled spatially and temporally. Objects containing these photoluminescent compositions.
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