Patent · US Expired

Marker for use in a magnetic electronic article surveillance system

US6157301A · kind A · utility

6Cited by

10References

18Claims

0Family size

Assignee

Vacuumschmelze GmbH & Co. KG · DE

Inventors

Christian Radeloff · Bruchköbel, DE
Gernot Hausch · Langenselbold, DE
Ottmar Roth · Ortenburg, DE

Key dates

Filing date	Jun 11, 1999
Grant date	Dec 5, 2000
Priority date	—
Expiry date	Jun 11, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH01F1/147
WIPO fieldControl
WIPO sectorInstruments

Abstract

A semihard magnetic alloy for activation strips in magnetic antitheft systems contains 0.1 to 10% by weight Ni, 0.1 to 15% by weight Cr, 0.1 to 15% by weight Mo and Fe making up the rest with an overall proportion of Fe, Ni and Mo of less than 95% by weight of the alloy. The alloy is distinguished with respect to known alloys in use by its excellent magnetic properties and high resistance to corrosion. Furthermore, the alloy can be excellently cold shaped before tempering.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.