Patent · US Active

Magnetic sensor

US7505233B2 · kind B2 · utility

15Cited by

16References

18Claims

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	Nov 7, 2005
Grant date	Mar 17, 2009
Priority date	—
Expiry date	Jan 16, 2027

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.