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:
Mar. 21, 2023
Filed:
Mar. 19, 2020
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Yoshitaka Murakawa, Tokyo, JP;
Shogo Muroya, Tokyo, JP;
Hiroyuki Morita, Tokyo, JP;
Masanori Ikeda, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/11 (2006.01); H02K 1/02 (2006.01); C04B 35/26 (2006.01); H01F 1/10 (2006.01);
U.S. Cl.
CPC ...
H01F 1/11 (2013.01); C04B 35/2633 (2013.01); C04B 35/2683 (2013.01); H01F 1/10 (2013.01); H02K 1/02 (2013.01); C04B 2235/3208 (2013.01); C04B 2235/3241 (2013.01); C04B 2235/3262 (2013.01); C04B 2235/3284 (2013.01); C04B 2235/3409 (2013.01); C04B 2235/3418 (2013.01); C04B 2235/767 (2013.01); C04B 2235/85 (2013.01);
Abstract
A ferrite sintered magnet comprising an M type Sr ferrite having a hexagonal structure as a main phase, wherein the ferrite sintered magnet does not substantially comprise a rare earth element and Co, a content of B is 0.005 to 0.9% by mass in terms of BO, and a content of Zn is 0.01 to 1.2% by mass in terms of ZnO.