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:
May. 12, 2026
Filed:
Dec. 13, 2022
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Shirou Ootsuki, Tokyo, JP;
Keisuke Kamiya, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 1/34 (2006.01); C04B 35/26 (2006.01); H01F 1/10 (2006.01);
U.S. Cl.
CPC ...
H01F 1/344 (2013.01); C04B 35/2683 (2013.01); C04B 2235/3227 (2013.01); C04B 2235/3274 (2013.01); C04B 2235/3427 (2013.01); C04B 2235/85 (2013.01);
Abstract
Provided is a ferrite sintered magnet including: magnetoplumbite type ferrite crystal grains; and a two-grain boundary interposed between the ferrite crystal grains. The two-grain boundary contains Ca and La, and an atomic ratio Ca/La at the two-grain boundary is 0.3 to 3.0.
Ootsuki, Shirou. (2026). Ferrite sintered magnet (U.S. Patent No. 12626846). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12626846
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile