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:
Dec. 19, 2017
Filed:
Mar. 31, 2014
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Akira Kano, Toyota, JP;
Dai Kobuchi, Nagoya, JP;
Eisuke Hoshina, Toyota, JP;
Osamu Yamashita, Toyota, JP;
Noritaka Miyamoto, Toyota, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, Aichi-ken, JP;
Abstract
A production method includes producing a rare-earth magnet precursor (S') by performing first hot working in which, in two side surfaces of a sintered body, which are parallel to a pressing direction and are opposite to each other, one side surface is brought to a constrained state to suppress deformation, and the other side surface is brought to an unconstrained state to permit deformation; and producing a rare-earth magnet by performing second hot working in which, in two side surfaces (S′, S′) of the rare-earth magnet precursor (S′), which are parallel to the pressing direction, a side surface (S′), which is in the unconstrained state in the first hot working, is brought to the constrained state to suppress deformation, and a side surface (S′), which is in the constrained state in the first hot working, is brought to the unconstrained state to permit deformation.