EP 0078401 A1 19830511 - Amorphous antipilferage marker.
Title (en)
Amorphous antipilferage marker.
Title (de)
Amorphe Diebstahlschutzmarke.
Title (fr)
Marqueur antivol amorphe.
Publication
Application
Priority
US 31762581 A 19811102
Abstract (en)
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) habe selected tones that provide the marker with signal identity. The marker is an elongated, ductile strip of amorphous ferromagnetic material having a composition defined by the formula FeaCrbCcPdMoeCufBgSih where "a" ranges from about 63-81 atom % "b" ranges from about 0-10 atom %, "c" ranges from about 11-16 atom %, "d" ranges from about 4-10 atom %, "e" ranges from about 0-2 atom %, "f" ranges from about 0-1 atom %, "g" ranges from about 0-4 atom % and "i" ranges from about 0-2 atom %, with the proviso that them sum (c+d+g+h) ranges from 19-24 atom % and the fraction [c/(c+d+g+h)] is less than about 0.84.
IPC 1-7
IPC 8 full level
C22C 45/02 (2006.01); G08B 13/24 (2006.01); H01F 1/153 (2006.01)
CPC (source: EP)
C22C 45/02 (2013.01); G08B 13/2411 (2013.01); G08B 13/2442 (2013.01); H01F 1/15308 (2013.01)
Citation (search report)
- [AD] EP 0017801 A1 19801029 - ALLIED CORP [US]
- [A] US 3820104 A 19740625 - FEARON E
- [A] US 3665449 A 19720523 - ELDER JAMES T, et al
- [A] US 3938125 A 19760210 - BENASSI DOMINIC A
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0078401 A1 19830511; EP 0078401 B1 19850807; CA 1196986 A 19851119; DE 3265257 D1 19850912; JP S5886694 A 19830524
DOCDB simple family (application)
EP 82108920 A 19821011; CA 414116 A 19821025; DE 3265257 T 19821011; JP 19327682 A 19821102