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:
Sep. 01, 2026
Filed:
Dec. 21, 2022
Tdk Corporation, Tokyo, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Ryuji Hashimoto, Tokyo, JP;
Shusuke Okada, Aichi, JP;
TDK Corporation, Tokyo, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Abstract
A samarium-iron-nitrogen based magnet powder includes a lanthanoid (Ln), iron (Fe), bismuth (Bi), tungsten (W), and nitrogen (N), wherein the lanthanoid includes samarium (Sm), an atomic ratio of bismuth to a sum of the lanthanoid, iron, bismuth, and tungsten (Bi/(Ln+Fe+Bi+W)) is 1.00 at % or less, an atomic ratio of tungsten to the sum of the lanthanoid, iron, bismuth, and tungsten (W/(Ln+Fe+Bi+W)) is 0.05 at % or more and 0.60 at % or less, and an atomic ratio of tungsten to bismuth (W/Bi) is 1.0 or more and 30.0 or less.