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. 27, 2022
Filed:
Feb. 05, 2019
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Hiroyuki Morita, Tokyo, JP;
Masanori Ikeda, Tokyo, JP;
Yoshitaka Murakawa, Tokyo, JP;
Taku Murase, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 1/10 (2006.01); H01F 1/11 (2006.01); C01G 49/00 (2006.01); C04B 35/26 (2006.01);
U.S. Cl.
CPC ...
H01F 1/10 (2013.01); C04B 35/2633 (2013.01); C04B 35/2641 (2013.01); C04B 2235/3274 (2013.01); C04B 2235/767 (2013.01);
Abstract
There is provided a ferrite sintered magnet having a high residual magnetic flux density. A ferrite sintered magnetincludes a plurality of main phase particlesincluding ferrite having a hexagonal structure, the number of core-shell structured particlesA having a coreand a shellcovering the core, among the main phase particles, is smaller than the number of the main phase particlesother than the core-shell structured particlesA.