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:
Jun. 17, 2008
Filed:
Jun. 08, 2004
Shigeru Shoji, Tokyo, JP;
Akira Sato, Tokyo, JP;
Yukio Kawaguchi, Tokyo, JP;
Kazumitsu Tanaka, Tokyo, JP;
Toshikazu Tanishima, Tokyo, JP;
Shigeru Shoji, Tokyo, JP;
Akira Sato, Tokyo, JP;
Yukio Kawaguchi, Tokyo, JP;
Kazumitsu Tanaka, Tokyo, JP;
Toshikazu Tanishima, Tokyo, JP;
TDK Corporation, Chuo-ku, Tokyo, JP;
Abstract
A ferrite substrate for thin-film inductors is provided by means of blending raw materials to meet a composition of di-iron trioxide (FeO): 40 to 55 mol %, nickel oxide (NiO): 5 to 35 mol %, zinc oxide (ZnO): 10 to 40 mol %, and bismuth trioxide (BiO): 150 to 750 ppm, or of FeO: 40 to 55 mol %, NiO: 5 to 35 mol %, ZnO: 10 to 40 mol %, cupric oxide (CuO): 5 to 10 mol %, and manganese dioxide (MnO): 0.5 to 2 mol %, and then molding and sintering the blended material, and applying hot isostatic pressing to the sintered article. A thin-film common mode filter and a thin-film common mode filter array using the ferrite substrate and the manufacturing method of the substrate are also provided.