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:
Jan. 12, 2021
Filed:
Dec. 05, 2017
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Masaaki Ito, Sunto-gun, JP;
Noritsugu Sakuma, Mishima, JP;
Tetsuya Shoji, Susono, JP;
Hidefumi Kishimoto, Susono, JP;
Masao Yano, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A rare earth magnet includes a main phase, a grain boundary phase present around the main phase and an intermediate phase interposed between the main phase and the grain boundary phase, and has an overall composition that is represented by the formula ((CeLa)R)TBM(RM)(where, Rand Rare rare earth elements other than Ce and La, T is at least one selected from among Fe, Ni, and Co, Mis an element having a small amount that does not influence magnetic characteristics, and Mis an alloy element for which a melting point of RMis lower than a melting point of R). A total concentration of Ce and La is higher in the main phase than in the intermediate phase, and a concentration of Ris higher in the intermediate phase than in the main phase.