Fluorescent or phosphorescent composition
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United States of America Patent
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Dec 23, 2003
Grant Date -
N/A
app pub date -
May 29, 2001
filing date -
Nov 27, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fluorescent or luminous composition, comprising a multilayered film-coated powder having at least two coating films on a base particle, and a fluorescent or luminous substance; the composition, wherein at least one layer of the coating films contains the fluorescent or luminous substance; a genuine/counterfeit discrimination object, in which the fluorescent or luminous composition; and a genuine/counterfeit discrimination method, comprising recognizing fluorescence or luminescence by irradiating, with a light, the genuine/counterfeit discrimination object.
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