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. 26, 2026
Filed:
Aug. 16, 2021
Tokin Corporation, Shiroishi, JP;
Shota Misumi, Shiroishi, JP;
TOKIN CORPORATION, Shiroishi, JP;
Abstract
A MnZn-based ferrite that can suppress both reduction of the loss at a high frequency and a change in magnetic properties in a high magnetic field and a method for producing the same are provided. A MnZn-based ferrite including FeO, ZnO, and MnO as main components, in which FeOis 53.2 to 56.0 mol % and ZnO is 3.0 to 12.0 mol %, with a balance of MnO, in 100 mol % of the main components, the MnZn-based ferrite includes 0.005 to 0.060% by mass of SiO, 0.010 to 0.060% by mass of CaO, 0.10 to 0.40% by mass of COO, and 0.05 to 0.30% by mass of TiO, as auxiliary components, per 100% by mass of the main components, an average crystal grain diameter is 4 μm or less, and a sintering density is 4.8 g/cmor more.