EP 1059620 B1 20130220 - Piezo effect based security feature on valuable or security documents and detection thereof
Title (en)
Piezo effect based security feature on valuable or security documents and detection thereof
Title (de)
Piezo-Effekt-basiertes Sicherheitsmerkmal an Wert- und Sicherheitsdokumenten und dazugehöriges Nachweisverfahren
Title (fr)
Caractéristiques de securité basées sur l'effet piézo pour des documents de valeur ou de securité et leur détection
Publication
Application
Priority
DE 19926010 A 19990608
Abstract (en)
[origin: EP1059620A1] The security characteristic has security elements (2) with piezo-effect properties mounted in and/or on valuable or security documents (1). The piezo elements can be distributed individually about a document or can be formed into a combination of several elements in a crystal structure. An Independent claim is also included for a method of checking security characteristics.
IPC 8 full level
CPC (source: EP US)
G07D 7/02 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1059620 A1 20001213; EP 1059620 B1 20130220; DE 19926010 A1 20001214; DE 19926010 C2 20030130; US 6659351 B1 20031209
DOCDB simple family (application)
EP 00110861 A 20000523; DE 19926010 A 19990608; US 58663900 A 20000605