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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.:

US 11373789 B1

PDFFull Text
Date of Patent:
Jun. 28, 2022

Filed:

Dec. 28, 2018

Ferrite sintered body and electronic component using thereof

Applicant:

Tdk Corporation, Tokyo, JP;

Inventors:

Takeshi Shibayama, Tokyo, JP;

Yukio Takahashi, Tokyo, JP;

Takashi Suzuki, Tokyo, JP;

Hiroyuki Tanoue, Tokyo, JP;

Masashi Shimoyasu, Tokyo, JP;

Masahiro Kato, Yurihonjo, JP;

Assignee:

TDK CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

C Melissa Koslow

Int. Cl.
CPC ...
H01F 1/36 (2006.01); H01F 17/04 (2006.01); C04B 35/626 (2006.01); H01F 17/00 (2006.01); H01F 1/34 (2006.01); C04B 35/26 (2006.01); H01F 27/28 (2006.01); H01F 27/40 (2006.01); H01F 41/04 (2006.01);
U.S. Cl.
CPC ...
H01F 1/36 (2013.01); C04B 35/265 (2013.01); C04B 35/62685 (2013.01); H01F 1/344 (2013.01); H01F 17/0013 (2013.01); H01F 17/04 (2013.01); H01F 27/2804 (2013.01); H01F 27/40 (2013.01); H01F 41/043 (2013.01); C04B 2235/3244 (2013.01); C04B 2235/3274 (2013.01); C04B 2235/3279 (2013.01); C04B 2235/3281 (2013.01); C04B 2235/3284 (2013.01); C04B 2235/3409 (2013.01); C04B 2235/3418 (2013.01); C04B 2235/365 (2013.01); C04B 2235/77 (2013.01); C04B 2235/786 (2013.01); C04B 2235/96 (2013.01); H01F 2027/2809 (2013.01);
Abstract

A ferrite sintered body of the invention includes; a main component including 48.65 to 49.45 mol % of iron oxide in terms of FeO, 2 to 16 mol % of copper oxide in terms of CuO, 28.00 to 33.00 mol % of zinc oxide in terms of ZnO, and a balance including nickel oxide, and a subcomponent including boron oxide in an amount of 5 to 100 ppm in terms of BOwith respect to 100 parts by weight of the main component, in which the ferrite sintered body includes crystal grains having an average crystal grain size of 2 to 30 μm.

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