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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 12665110 B1

PDFFull Text
Date of Patent:
Jun. 23, 2026

Filed:

Sep. 10, 2021

Permanent magnet alloy, method for producing the same, permanent magnet, and method for producing the same

Applicants:

Tohoku University, Sendai, JP;

Proterial, Ltd., Tokyo, JP;

Inventors:

Ryosuke Kainuma, Sendai, JP;

Toshihiro Omori, Sendai, JP;

Xiao Xu, Sendai, JP;

Naoki Hashimoto, Sendai, JP;

Tomohito Maki, Tokyo, JP;

Assignees:

TOHOKU UNIVERSITY, Miyagi, JP;

PROTERIAL, LTD., Tokyo, JP;

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Keith D Hendricks

Assistant Examiner:

Janell C Morillo

Int. Cl.
CPC ...
H01F 1/047 (2006.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
H01F 1/047 (2013.01); H01F 41/0253 (2013.01);
Abstract

A permanent magnet alloy according to the present disclosure contains Mn at a content not lower than 41% by atom and not higher than 53% by atom; Al at a content not lower than 46% by atom and not higher than 53% by atom; and Cu at a content not lower than 0.5% by atom and not higher than 10% by atom. The alloy contains a stable phase, having a tetragonal structure, at a ratio not lower than 50%.

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Kainuma, Ryosuke. (2026). Permanent magnet alloy, method for producing the same, permanent magnet, and method for producing the same (U.S. Patent No. 12665110). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12665110

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