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:
Apr. 24, 2012
Filed:
Apr. 16, 2008
Applicants:
Satoru Tanaka, Tottori, JP;
Takeshi Tachibana, Tottori, JP;
Inventors:
Satoru Tanaka, Tottori, JP;
Takeshi Tachibana, Tottori, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 27/24 (2006.01); H01F 27/02 (2006.01); H01F 5/00 (2006.01); H01F 27/28 (2006.01); H01F 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A low-loss ferrite comprising as main components 46.5-49.5% by mol of FeO, 17-26% by mol of ZnO, 4-12% by mol of CuO, and 0.2% or more and less than 1.2% by mol of CoO, the balance being NiO, and 0.03-1.4% by mass (as SnO) of Sn based on 100% by mass of the main components, and having an average crystal grain size of 0.7-2.5 μm, and an electronic device obtained by integrally sintering pluralities of layers of this low-loss ferrite and coil-shaped electrodes formed in the laminate.