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:
Oct. 30, 2007
Filed:
Apr. 21, 2005
Applicants:
Takashi Kajino, Tokyo, JP;
Kenya Takagawa, Tokyo, JP;
Taku Murase, Tokyo, JP;
Takuya Aoki, Tokyo, JP;
Inventors:
Takashi Kajino, Tokyo, JP;
Kenya Takagawa, Tokyo, JP;
Taku Murase, Tokyo, JP;
Takuya Aoki, Tokyo, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 7/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided a Mn—Zn based ferrite member excellent in mass productivity, high in withstand voltage, low in loss and excellent in direct current superposition property. The Mn—Zn based ferrite member is provided with a surface layer portion having the properties that ρ5 defined in the specification satisfies the relation that ρ5≧10Ωm and ρ50 defined in the specification satisfies the relation that ρ50≦10Ωm.