Patent · US Active

Magnetic sensor

US7924534B2 · kind B2 · utility

4Cited by

21References

19Claims

0Family size

Assignee

International Business Machines Corporation · US

Inventors

Hubert Grimm · Mommenheim, DE
Jan Marien · Selzen, DE
Rolf Schaefer · Mainz, DE

Key dates

Filing date	Jul 9, 2008
Grant date	Apr 12, 2011
Priority date	—
Expiry date	Apr 20, 2029

Classification

Technology area (CPC G)Physics
CPC primaryG11B5/3948
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A magnetic sensor having at least a first and at least a second structure of soft-magnetic material that are spatially separated and define a first gap therebetween. The first and second structure of soft-magnetic material are adapted to form a gap magnetic field pointing in a direction substantially perpendicular to the elongation of the first gap in the vicinity of the first gap in response to an external magnetic field. Additionally, the magnetic sensor comprises at least a first magnetoresistive layered structure that is positioned in the vicinity of the first gap including inside the first gap and that is sensitive to the gap magnetic field.

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