The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 2022
Filed:
Nov. 25, 2019
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Hirokazu Takahashi, Tokyo, JP;
Kazuya Watanabe, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 33/09 (2006.01);
U.S. Cl.
CPC ...
G01R 33/093 (2013.01); G01R 33/091 (2013.01);
Abstract
A magnetic sensor device includes a magnetic sensor, and a soft magnetic structure disposed near the magnetic sensor. The magnetic sensor and the soft magnetic structure are configured so that when an external magnetic field including a detection-target magnetic field is applied to the magnetic sensor, the external magnetic field is also applied to the soft magnetic structure, and when the soft magnetic structure has a magnetization, a magnetic field based on the magnetization of the soft magnetic structure is applied to the magnetic sensor. The soft magnetic structure has a stripe domain structure.