Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Reexamination Certificate
2006-05-09
2006-05-09
Hess, Bruce H. (Department: 1774)
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
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
Arjo Wiggins Security Sas
Hess Bruce H.
Oliff & Berridg,e PLC
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