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. 26, 2010
Filed:
May. 01, 2006
Katsunari Moriai, Nikaho, JP;
Dai Matsuoka, Tokyo, JP;
Takahiro Sato, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
An object of the present invention is to provide a multilayer filter constructed so as to be less likely to suffer peeling between a varistor part and an inductor part. A multilayer filteras a preferred embodiment has a structure in which a varistor partand an inductor part are stacked. The varistor partconsists of a stack of varistor layerswith internal electrodes, and the varistor layers contain ZnO as a principal component, and contain at least one element selected from the group consisting of Pr and Bi, Co, and Al as additives. The inductor partconsists of a stack of inductor layers-with conductor patterns-, and the inductor layers contain ZnO as a principal component and substantially contain neither Co nor Al.