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. 27, 2021
Filed:
Jan. 18, 2013
Kabushiki Kaisha Toshiba, Tokyo, JP;
Yosuke Horiuchi, Tokyo, JP;
Shinya Sakurada, Tokyo, JP;
Tsuyoshi Kobayashi, Kanagawa-ken, JP;
Keiko Okamoto, Kanagawa-ken, JP;
Masaya Hagiwara, Kanagawa-ken, JP;
KABUSHIKI KAISHA TOSHIBA, Tokyo, JP;
Abstract
In one embodiment, a permanent magnet includes a composition expressed by RFeMCuCo(R is a rare-earth element, M is at least one element selected from Zr, Ti, and Hf, 10≤p≤13.5 at %, 28≤q≤40 at %, 0.88≤r≤7.2 at %, and 3.5≤s≤13.5 at %), and a metallic structure including a cell phase having a ThZncrystal phase, and a cell wall phase. A Fe concentration (C1) in the cell phase is in a range from 28 at % to 45 at %, and a difference (C1−C2) between the Fe concentration (C1) in the cell phase and a Fe concentration (C2) in the cell wall phase is larger than 10 at %.