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.

Date of Patent:
Aug. 12, 2025

Filed:

Mar. 08, 2022
Applicant:

Tdk Corporation, Tokyo, JP;

Inventor:

Keisuke Kamiya, Tokyo, JP;

Assignee:

TDK Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 41/02 (2006.01); C04B 35/26 (2006.01); C04B 35/626 (2006.01); C04B 35/64 (2006.01); H01F 1/11 (2006.01);
U.S. Cl.
CPC ...
H01F 41/0266 (2013.01); C04B 35/2633 (2013.01); C04B 35/2641 (2013.01); C04B 35/6262 (2013.01); C04B 35/64 (2013.01); H01F 1/11 (2013.01); C04B 2235/3274 (2013.01); C04B 2235/3454 (2013.01); C04B 2235/767 (2013.01);
Abstract

A ferrite magnet includes: a hexagonal ferrite main phase; and a second phase. The second phase is an oxide phase containing: an element A which is at least one selected from the group consisting of Ca, Sr, Ba, Bi, and rare earth elements; a transition metal element T including at least Fe; and an element G which is at least one selected from the group consisting of Si, Al, B, F, K, Na, Li, P, and S. When the total number of atoms of the element A, the transition metal element T, and the element G in the second phase is set to 100 at %, the element A occupies 30 to 80 at %, the element G occupies 15 to 40 at %, and the transition metal element T occupies less than 4 at %.


Find Patent Forward Citations

Kamiya, Keisuke. (2025). Ferrite sintered magnet and method for manufacturing ferrite sintered magnet (U.S. Patent No. 12387875). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12387875

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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