Magnetic devices

Details Magnetic devices Magnetic devices

1988-06-07

1990-10-02

Morris, Theodore

Stock material or miscellaneous articles

All metal or with adjacent metals

Foil or filament smaller than 6 mils

428611, 428622, 428626, 428650, 428651, 428679, 340551, 340572, G08B 1326

Patent

active

049606514

ABSTRACT:
Magnetic devices are disclosed which include an article comprising a substrate and a thin coating of a magnetic material, in which:
(a) said substrate is a flexible, laminar material; (b) said magnetic material is an amorphous metal glass of high intrinsic magnetic permeability, with low or substantially zero magnetostriction, and with low coercivity; and (c) said thin coating of a magnetic material is not greater than 6 microns in thickness. This article can be used as, or to make, an antipilferage tag or marker. Deactivation materials and configurations are also disclosed, as well as techniques, in particular sputtering or PVD, for producing such a tag.

REFERENCES:
patent: 3938125 (1976-02-01), Benassi
patent: 4484184 (1984-11-01), Gregor et al.
patent: 4495487 (1985-01-01), Kavesh et al.
patent: 4622543 (1986-11-01), Anderson, III et al.
patent: 4636448 (1987-01-01), Morita et al.
patent: 4673612 (1987-06-01), Takagi et al.
patent: 4686154 (1987-08-01), Mejia

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