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:
Feb. 19, 2019
Filed:
Nov. 25, 2015
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Hitoshi Ohkubo, Tokyo, JP;
Masazumi Arata, Tokyo, JP;
Manabu Ohta, Tokyo, JP;
Shou Kawadahara, Tokyo, JP;
Yoshihiro Maeda, Tokyo, JP;
Takahiro Kawahara, Tokyo, JP;
Hokuto Eda, Tokyo, JP;
Shigeki Sato, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 1/24 (2006.01); H01F 17/00 (2006.01); H01F 17/04 (2006.01); H01F 27/29 (2006.01);
U.S. Cl.
CPC ...
H01F 1/24 (2013.01); H01F 17/0013 (2013.01); H01F 17/04 (2013.01); H01F 27/292 (2013.01); H01F 2017/048 (2013.01);
Abstract
In a coil component (planar coil element), at least part of a third metal magnetic powder constituting a metal magnetic powder and having a minimum average grain diameter is uncoated, which suppresses a reduction in magnetic permeability. On the other hand, the remaining metal powders are coated with glass, which improves the insulating properties of a metal magnetic powder-containing resin and reduces core loss.