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:
Aug. 03, 2021
Filed:
Aug. 30, 2017
Applicant:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Inventors:
Yosuke Horiuchi, Ota Tokyo, JP;
Shinya Sakurada, Shinagawa Tokyo, JP;
Naoyuki Sanada, Yokohama Kanagawa, JP;
Assignee:
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 1/053 (2006.01); C22C 19/07 (2006.01); H02K 1/27 (2006.01); H01F 1/055 (2006.01); H02K 1/02 (2006.01); H01F 1/059 (2006.01); H01F 41/02 (2006.01); B22F 1/00 (2006.01); B22F 3/02 (2006.01); B22F 9/04 (2006.01);
U.S. Cl.
CPC ...
H01F 1/053 (2013.01); C22C 19/07 (2013.01); H01F 1/0557 (2013.01); H01F 41/0266 (2013.01); H02K 1/02 (2013.01); H02K 1/27 (2013.01); H02K 1/276 (2013.01); H02K 1/2766 (2013.01); B22F 1/0011 (2013.01); B22F 3/02 (2013.01); B22F 9/04 (2013.01); B22F 2009/043 (2013.01); B22F 2998/10 (2013.01); B22F 2999/00 (2013.01); C22C 2200/02 (2013.01); H01F 1/0596 (2013.01);
Abstract
A high-performance permanent magnet is provided. A permanent magnet expressed by a composition formula: RFeMCuCo. The magnet comprises a metal structure including a cell phase having a ThZncrystal phase, and a Cu-rich phase provided to divide the cell phase and having a Cu concentration higher than that of the ThZncrystal phase. An Fe concentration of the ThZncrystal phase is not less than 30 atomic % nor more than 45 atomic %. An average length of the Cu-rich phase is not less than 30 nm nor more than 250 nm.