Nova Patents
ATE41834T1

Amorphous antipilferage marker.

Abstract

A magnetic theft detection system marker is adapted to generate magnetic fields at frequencies that (1) are harmonically related to an incident magnetic field applied within an interrogation zone and (2) have selected tones that provide the marker with signal identity. The marker is an elongated, ductile strip of amorphous ferromagnetic material having a value of magnetostriction near zero that retains its signal identity under stress.

Term

Term ended

Projected expiry passed 13 January 2004, 22.7 years ago.

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36 members in 14 offices

This recordMember, by publication datePriority claim4 more offices are in the list below

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Priority claims
DocumentOfficeKindDate
46374383United States of AmericaA

Members36

Family members, oldest first
DocumentOfficeKind
DK48884D0DenmarkD0
IL70837A0IsraelA0
IL70837D0IsraelD0
IE840052LIrelandL
DK48884ADenmarkA
AU2360984AAustraliaA
ZA84460BSouth AfricaB
JPS59161794AJapanA
EP0121649A1European Patent Office (EPO)A1
KR840009015ARepublic of KoreaA
US4553136AUnited States of AmericaA
ES529612A0SpainA0
ES8605914A1SpainA1
CA1213334ACanadaA
AU576312B2AustraliaB2
MX157190AMexicoA
EP0121649B1European Patent Office (EPO)B1
AT41834TAustriaT
ATE41834T1This recordAustriaT1
DE3477527D1GermanyD1
IL70837AIsraelA
IE55339B1IrelandB1
DK160062BDenmarkB
KR910000821B1Republic of KoreaB1
DK160062CDenmarkC
EP0121649B2European Patent Office (EPO)B2
USRE35042EUnited States of AmericaE
JP2554613B2JapanB2
JPH0922491AJapanA
JPH0922492AJapanA
JPH0922493AJapanA
JPH0922494AJapanA
JP2666812B2JapanB2
JP2666813B2JapanB2
JP2666814B2JapanB2
JP2666815B2JapanB2