Patent · US Active

Sensor having protruding surface

US11971461B2 · kind B2 · utility

1Cited by

0References

10Claims

0Family size

Assignee

TDK CORPORATION · JP

Inventors

Hiromichi Umehara · Tokyo, JP
Kenzo Makino · Tokyo, JP
Masachika Hashino · Tokyo, JP

Key dates

Filing date	Sep 15, 2022
Grant date	Apr 30, 2024
Priority date	—
Expiry date	Sep 15, 2042

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/098
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A magnetic sensor includes an insulating layer including a protruding surface, a first MR element, and a second MR element. The protruding surface includes a first curved surface portion. The first curved surface portion includes a first portion including an upper end portion of the protruding surface, and a second portion continuous with the first portion at a position away from the upper end portion of the protruding surface. When the shape of the protruding surface is regarded as a function Z, the mean value of the absolute value of a second derivative Z″ of the function Z corresponding to the first portion is smaller than the mean value of the absolute value of the second derivative Z″ of the function Z corresponding to the second portion.

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