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:
Mar. 10, 2015
Filed:
Mar. 19, 2013
Tdk Corporation, Tokyo, JP;
Kyohei Tonoyama, Tokyo, JP;
Makoto Morita, Tokyo, JP;
Tomokazu Ito, Tokyo, JP;
Hitoshi Ohkubo, Tokyo, JP;
Manabu Ohta, Tokyo, JP;
Yoshihiro Maeda, Tokyo, JP;
Yuuya Kaname, Tokyo, JP;
Hideharu Moro, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
In a planar coil element, the quantitative ratio of inclined particles to total particles of a first metal magnetic powder contained in a metal magnetic powder-containing resin provided in a through hole of a coil unit is higher than the quantitative ratio of inclined particles to total particles of the first metal magnetic powder contained in the metal magnetic powder-containing resin provided in other than the through hole, and many of particles of the first metal magnetic powder in the magnetic core are inclined particles whose major axes are inclined with respect to the thickness direction and the planar direction of a substrate. Therefore, the planar coil element has improved strength as compared to a planar coil element shown in FIG.A and has improved magnetic permeability as compared to a planar coil element shown in FIG.B.