Patent · US Expired

Deactivatable security label for anti-theft systems

US4743890A · kind A · utility

15Cited by

7References

8Claims

0Family size

Assignee

Vacummschmelze GmbH · DE

Inventors

Hans-Rainer Hilzinger · Langenselbold, DE
Paul M. Reinhard · Marengo, US
Reiner Dinter · Bruchköbel, DE

Key dates

Filing date	Nov 24, 1986
Grant date	May 10, 1988
Priority date	—
Expiry date	Nov 24, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S428/928
WIPO fieldControl
WIPO sectorInstruments

Abstract

A deactivatable security label comprising a low-coercivity strip and a strip having a high coercive field strength can be advantageously manufactured when the alloy of cobalt, nickle and/or iron is employed which exhibits a coercive field strength of between 20 and 50 A/cm given a remanence of more than one Tesla and when this strip is secured to a low-coercivity strip of amorphous material by means of spot welding.

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