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:
Feb. 16, 2021
Filed:
Jan. 24, 2017
Applicant:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Inventors:
Yosuke Horiuchi, Tokyo, JP;
Shinya Sakurada, Tokyo, JP;
Masaya Hagiwara, Kanagawa, JP;
Tsuyoshi Kobayashi, Kanagawa, JP;
Tadahiko Kobayashi, Kanagawa, JP;
Assignee:
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/055 (2006.01); H02K 1/02 (2006.01); H02K 1/27 (2006.01); H02K 21/14 (2006.01); B22F 3/10 (2006.01); C22C 19/07 (2006.01); C22C 28/00 (2006.01); C22C 30/00 (2006.01); H02K 1/17 (2006.01); H02K 21/00 (2006.01);
U.S. Cl.
CPC ...
H01F 1/055 (2013.01); B22F 3/1017 (2013.01); C22C 19/07 (2013.01); C22C 28/00 (2013.01); C22C 30/00 (2013.01); H01F 1/0551 (2013.01); H01F 1/0557 (2013.01); H02K 1/17 (2013.01); H02K 1/27 (2013.01); H02K 1/276 (2013.01); H02K 1/2766 (2013.01); H02K 21/00 (2013.01); H02K 21/14 (2013.01); B22F 2998/10 (2013.01);
Abstract
A permanent magnet expressed by a composition formula: RFeMCuCo. The magnet comprises a metallic structure including crystal grains which constitutes a main phase having a ThZncrystal phase. An average value of Fe concentrations in the crystal grains of 20 or more is 28 atomic percent or more and an average value of R element concentrations in the crystal grains of 20 or more is 10 atomic percent or more.