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. 31, 2024
Filed:
May. 19, 2023
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Junnichi Nagaoka, Tokyo, JP;
Hitoshi Taguchi, Tokyo, JP;
Yuichi Sugawara, Tokyo, JP;
Jo Sato, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/11 (2006.01); C04B 35/26 (2006.01); C04B 35/626 (2006.01); C04B 35/64 (2006.01); H01F 1/10 (2006.01); H01F 1/113 (2006.01); H02K 1/02 (2006.01);
U.S. Cl.
CPC ...
H01F 1/11 (2013.01); C04B 35/2633 (2013.01); C04B 35/6262 (2013.01); C04B 35/62625 (2013.01); C04B 35/64 (2013.01); H01F 1/10 (2013.01); H01F 1/113 (2013.01); H02K 1/02 (2013.01); C04B 2235/3274 (2013.01); C04B 2235/3409 (2013.01); C04B 2235/3418 (2013.01); C04B 2235/605 (2013.01); C04B 2235/606 (2013.01); C04B 2235/6567 (2013.01); C04B 2235/76 (2013.01);
Abstract
Provided is a ferrite sintered magnet including a ferrite phase having a magnetoplumbite-type crystal structure. x, y, and m satisfy the following Equations (1), (2), and (3) when composition of the ferrite sintered magnet is represented by RAFeCo, where R denotes at least one kind of element selected from rare earth elements including Y and A denotes Ca or Ca and elements including at least one kind selected from Sr or Ba. The content of B in the ferrite sintered magnet is from 0.1% to 0.6% by mass in terms of BO.0.2≤≤0.8 (1)0.1≤≤0.65 (2)3≤≤14 (3)