Inorganic optical taggant and method of making

Details Inorganic optical taggant and method of making Inorganic optical taggant and method of making

2005-05-31

2005-05-31

Koslow, C. Melissa (Department: 1755)

Compositions

Inorganic luminescent compositions

Compositions containing halogen; e.g., halides and oxyhalides

C252S30140S, C252S30140F, C252S30140H, C252S30140P, C252S301500, C252S30160R, C252S30160S, C252S30160P, C252S30160F, C252S965000, C252S645000, C149S123000, C501S012000, C501S032000, C501S033000, C501S127000, C501S153000, C501S152000, C501S103000

Reexamination Certificate

active

06899827

ABSTRACT:
Sintered, translucent ceramic microbeads, preferably alumina, titania, zirconia, yttria, zirconium phosphate, or yttrium aluminum garnet (YAG) are doped with one or more optically active species. The beads may be added to substances such as explosives in order to create a distinctive optical signature that identifies a manufacturer, lot number, etc. in the event of the need for forensic analysis. Because the beads have a generally spherical surface, the radius of curvature provides an additional distinguishing characteristic by which a particular sample may be identified. The beads could also be formulated into paints if needed to create distinctive optical signatures for camouflage, decoys, or other countermeasures and could also be applied as a dust to track the movement of personnel, vehicles, etc.

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