Authenticatable article and method of authenticating

Details Authenticatable article and method of authenticating Authenticatable article and method of authenticating

2004-07-13

2009-10-06

Tran, Thao T. (Department: 1794)

Stock material or miscellaneous articles

Composite

Of polycarbonate

C428S447000, C428S913000, C428S916000, C428S917000

Reexamination Certificate

active

07597961

ABSTRACT:
An authenticatable article can comprise a polymer layer comprising a first taggant, and a second taggant disposed adjacent to the first taggant. The relative relationship of the first taggant and the second taggant can be such that at least one of the first taggant and the second taggant can cause an alteration in an emission from the other of the first taggant and the second taggant. One method of authenticating an article comprises illuminating an article and determining if an altered emission is within a selected emission range. The article comprises a polymer layer and a coating disposed on a side of the polymer layer. The polymer layer comprises a first taggant, and the coating causes a predetermined alteration in an emission from the taggant to form the altered emission.

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