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. 10, 2021
Filed:
Apr. 13, 2018
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Masaaki Ito, Sunto-gun, JP;
Noritsugu Sakuma, Mishima, JP;
Masao Yano, Toyota, JP;
Hidefumi Kishimoto, Susono, JP;
Tetsuya Shoji, Susono, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A method for producing a rare earth magnet, including preparing a melt of a first alloy having a composition represented by (RRR)TBM(wherein Ris a light rare earth element, Ris an intermediate rare earth element, Ris a heavy rare earth element, T is an iron group element, and Mis an impurity element, etc.), cooling the melt of the first alloy at a rate of from 10to 10K/sec to obtain a first alloy ingot, pulverizing the first alloy ingot to obtain a first alloy powder having a particle diameter of 1 to 20 μm, preparing a melt of a second alloy having a composition represented by (RR)M(wherein Ris a light rare earth element, Ris an intermediate or heavy rare earth element, Mis an alloy element, etc.), and putting the first alloy powder into contact with the melt of the second alloy.