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:
Jun. 13, 2023
Filed:
Jul. 14, 2021
Applicant:
Kabushiki Kaisha Toshiba, Tokyo, JP;
Inventors:
Masaya Hagiwara, Yokohama Kanagawa, JP;
Yosuke Horiuchi, Ota Tokyo, JP;
Shinya Sakurada, Shinagawa Tokyo, JP;
Assignee:
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 1/055 (2006.01); B22F 3/24 (2006.01); C22C 38/16 (2006.01); C22C 38/14 (2006.01); C22C 38/10 (2006.01); H01F 41/02 (2006.01); C22C 38/00 (2006.01); C22C 19/07 (2006.01);
U.S. Cl.
CPC ...
H01F 1/0557 (2013.01); B22F 3/24 (2013.01); B22F 2003/248 (2013.01); B22F 2998/10 (2013.01); B22F 2999/00 (2013.01); C22C 19/07 (2013.01); C22C 38/005 (2013.01); C22C 38/10 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); H01F 41/0266 (2013.01);
Abstract
A permanent magnet is expressed by a composition formula: RFeMCuCo. The magnet includes a crystal grain having a main phase including a TbCucrystal phase, and a volume ratio of the TbCucrystal phase to the main phase is 95% or more.