EP 0190087 B1 19880406 - FORGE-PROOF SECURITY PAPER, PROCESS FOR MAKING A PAPER FORGE-PROOF AND AQUEOUS OR ORGANIC COMPOSITION ESPECIALLY USEFUL IN MAKING A PAPER FORGE-PROOF
Title (en)
FORGE-PROOF SECURITY PAPER, PROCESS FOR MAKING A PAPER FORGE-PROOF AND AQUEOUS OR ORGANIC COMPOSITION ESPECIALLY USEFUL IN MAKING A PAPER FORGE-PROOF
Publication
Application
Priority
FR 8500939 A 19850121
Abstract (en)
[origin: US4725497A] This invention relates to an unfalsifiable safety paper comprising on its surface and/or in its mass, at least one compound responding to formula: <IMAGE> (I) in which: R corresponds to hydrogen, to an alkyl group of C1 to C8, substituted or not, to a non-substituted, N-substituted or N,N-substituted amine group, to NO2, to a halogen; n is equal to 0 or 1. The invention is applicable to handwritten pieces for payment.
IPC 1-7
IPC 8 full level
B44F 1/12 (2006.01); D21H 21/46 (2006.01)
CPC (source: EP US)
D21H 21/46 (2013.01 - EP US); Y10S 428/915 (2013.01 - EP US); Y10T 428/25 (2015.01 - EP US); Y10T 428/27 (2015.01 - EP US); Y10T 428/31993 (2015.04 - EP US)
Designated contracting state (EPC)
DE GB IT NL
DOCDB simple family (publication)
EP 0190087 A1 19860806; EP 0190087 B1 19880406; CA 1276414 C 19901120; DE 3660121 D1 19880511; FR 2576332 A1 19860725; FR 2576332 B1 19870410; PT 81877 A 19860201; PT 81877 B 19871130; US 4725497 A 19880216
DOCDB simple family (application)
EP 86420015 A 19860116; CA 499881 A 19860120; DE 3660121 T 19860116; FR 8500939 A 19850121; PT 8187786 A 19860120; US 82043686 A 19860117