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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.:

US 12352832 B1

PDFFull Text
Date of Patent:
Jul. 08, 2025

Filed:

Jan. 30, 2023

Reducing angle error in angle sensor due to orthogonality drift over magnetic-field

Applicant:

Allegro Microsystems, Llc, Manchester, NH (US);

Inventors:

Samridh Jaiswal, London, GB;

Paolo Campiglio, Arcueil, FR;

Ronald Lehndorff, Mainz, DE;

Yen Ting Liu, Hsinchu, TW;

Assignee:

Allegro MicroSystems, LLC, Manchester, NH (US);

Attorney:

DALY, CROWLEY, MOFFORD & DURKEE, LLP

Primary Examiner:

Raul J Rios Russo

Int. Cl.
CPC ...
G01R 33/09 (2006.01); G01B 7/30 (2006.01); G01R 33/00 (2006.01);
U.S. Cl.
CPC ...
G01R 33/091 (2013.01); G01B 7/30 (2013.01); G01R 33/093 (2013.01); G01R 33/096 (2013.01); G01R 33/098 (2013.01); G01R 33/0052 (2013.01);
Abstract

In one aspect, a method includes manufacturing a magnetic-field angle sensor on a wafer. The manufacturing includes forming a cosine bridge that includes forming a first magnetoresistance (MR) element. The manufacturing also includes forming a sine bridge that includes forming a second MR element. Forming the first MR element includes using a process to reduce orthogonality errors between the sine bridge and the cosine bridge caused by anisotropy present in magnetic material in the first MR element.

Find Patent Forward Citations

Jaiswal, Samridh. (2025). Reducing angle error in angle sensor due to orthogonality drift over magnetic-field (U.S. Patent No. 12352832). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12352832

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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