Security paper

Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond

Reexamination Certificate

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Details

C162S125000, C283S072000, C428S916000, C503S200000

Reexamination Certificate

active

07041364

ABSTRACT:
The invention relates to security paper (1) including at least one zone (2; 3) that reacts with nonpolar solvents. The paper also includes a barrier (4) that is impermeable to nonpolar solvents between a first outside face (10) of the security paper and the zone (2; 3) that reacts with the solvents.

REFERENCES:
patent: 4833002 (1989-05-01), Sinclair
patent: 6159585 (2000-12-01), Rittenhouse

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