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:
Apr. 14, 2026
Filed:
Mar. 23, 2021
Ihi Corporation, Tokyo, JP;
Haruki Eguchi, Tokyo, JP;
Akihiro Nomura, Tokyo, JP;
Natsuki Yoneyama, Tokyo, JP;
Hiroo Takahashi, Tokyo, JP;
Osamu Harasaki, Tokyo, JP;
Hiroki Yoshizawa, Tokyo, JP;
Isao Nakanowatari, Tokyo, JP;
IHI Corporation, Tokyo, JP;
Abstract
A method of manufacturing an Sm—Fe—N magnet includes filling a metal sheath with a magnet powder including an Sm—Fe—N compound as a main component and sealing the metal sheath, applying a magnetic field to the magnet powder sealed in the metal sheath, and magnetizing the magnet powder by magnetically orienting the magnet powder and aligning a direction of magnetic orientation in one direction, preliminarily rolling the magnetically oriented magnet powder sealed in the metal sheath to make the magnetically oriented magnet powder into a green compact, and pressurizing the green compact sealed in the metal sheath and densifying the green compact to form a magnet body, wherein the preliminary rolling is performed by lightly rolling the magnetically oriented magnet powder sealed in the metal sheath with a pressure smaller than a pressure for pressurizing the green compact.