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:
May. 05, 2009
Filed:
Aug. 30, 2006
Ryuichi Wada, Tokyo, JP;
Takuya Aoki, Tokyo, JP;
Hiroshi Momoi, Tokyo, JP;
Yukio Takahashi, Tokyo, JP;
Takahiro Satoh, Tokyo, JP;
Ryuichi Wada, Tokyo, JP;
Takuya Aoki, Tokyo, JP;
Hiroshi Momoi, Tokyo, JP;
Yukio Takahashi, Tokyo, JP;
Takahiro Satoh, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
An NiCuZn-base ferrite of the invention comprises as main components an iron oxide in an amount of 45.0 to 49.0 mol % on FeObasis, an copper oxide in an amount of 5.0 to 14.0 mol % on CuO basis and a zinc oxide in an amount of 1.0 to 32.0 mol % on ZnO basis with a nickel oxide accounting for the rest mol % on NiO basis. With respect to the main components, a bismuth oxide is contained in an amount of 0.25 exclusive to 0.40% by weight on BiObasis, and a tin oxide is contained in an amount of 1.00 to 2.50% by weight on SnObasis. The invention ensures a leap upward in direct-current bias characteristics.