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:
Aug. 26, 2008
Filed:
May. 26, 2005
Sadaki Satoh, Tokyo, JP;
Junetsu Tamura, Tokyo, JP;
Hideharu Moro, Tokyo, JP;
Tsuneo Suzuki, Tokyo, JP;
Sadaki Satoh, Tokyo, JP;
Junetsu Tamura, Tokyo, JP;
Hideharu Moro, Tokyo, JP;
Tsuneo Suzuki, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A method for manufacturing a coil-embedded dust core with a small variation in inductance value with efficiency includes a step (a) of charging soft magnetic metal powder including an insulating material, composing a green body, so as to cover a coil, and (b) compacting the soft magnetic metal powder covering the coilin an axial direction of the coil. In the step (b), the soft magnetic metal powder is compacted while an amount of the soft metal powder charged into the part corresponding to the winding section is kept smaller than an amount of the soft magnetic metal powder charged into the other part that are not corresponding to the winding section, with an upper surface or a lower surface of the winding section as a reference.