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:
Sep. 30, 2003
Filed:
Dec. 27, 2002
Atsuyuki Nakano, Tokyo, JP;
Isao Nakahata, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A multilayer ferrite component is produced with powder for magnetic ferrite, characterized by having the composition of Fe O : 40 to 51 mol %, CuO: 7 to 30 mol %, ZnO: 0.5 to 35 mol % and MgO: 5 to 35 mol %, in which a peak of particle size distribution positions in range of 0.3 to 1.2 &mgr;m. This MgCuZn ferrite uses such powders of less deterioration in a permeability &mgr; and a peak position of particle size distribution in range of 0.3 to 1.2 &mgr;m, thereby enabling a co-firing together with Ag or Ag alloys. It is provided a magnetic ferrite of less deterioration in a magnetic characteristic, in particular a permeability &mgr; against stress and enabling to be sintered at low temperature sintering, that is, below the melting points of Ag or Ag alloys used as electrode materials.