G - Physics – 01 – N
Patent
G - Physics
01
N
283/25, 117/6, 1
G01N 31/22 (2006.01) A63F 3/06 (2006.01) B41M 3/14 (2006.01) B44F 1/10 (2006.01) D21H 21/46 (2006.01)
Patent
CA 2278895
A printed document including a non-foil containing substrate, data printed over at least a portion of the substrate, and at least one security layer applied above, below or both above and below the data, said at least one security layer including a composition which, upon exposure to undesirable contact by an attacking material which can expose the data, undergoes a change of a property which can be visually observed.
Boulay Robert
Duong H. Dong
Gougeon Francois
Moffat & Co.
Oberthur Gaming Technologies Inc.
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