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:
Jan. 24, 2012
Filed:
Jan. 22, 2010
Shuichi Ozawa, Nagoya, JP;
Natsumi Shimogawa, Nagoya, JP;
Katsuyuki Takeuchi, Aisai, JP;
Yukio Aisaka, Nagoya, JP;
Shuichi Ozawa, Nagoya, JP;
Natsumi Shimogawa, Nagoya, JP;
Katsuyuki Takeuchi, Aisai, JP;
Yukio Aisaka, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A layered inductor is manufactured by layering 'silver-based conductive layers' and 'ferrite-based magnetic layers' and simultaneously firing these layers. The conductive layers are via-connected to form a helical coil. A shape of a cross sectional surface of the conductive layer, cut by a plane perpendicular to a longitudinal direction of each of the conductive layers is a substantial trapezoid shape, having an upper base and a lower base. A base angle θ of the trapezoid shape at both ends of the lower base is equal to or greater than 50° and is smaller than or equal to 80°.