Phosphorescent compositions and methods for identification...

Details Phosphorescent compositions and methods for identification... Phosphorescent compositions and methods for identification...

2007-06-07

2009-06-16

Porta, David P (Department: 2884)

Radiant energy

Luminophor irradiation

With ultraviolet source

Reexamination Certificate

active

07547894

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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