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:
Mar. 27, 2007
Filed:
Jul. 27, 2004
Ferrite core for rfid application, method of manufacturing the same, and ferrite coil using the same
Applicants:
Chisato Ishida, Kokubu, JP;
Masayuki Moriyama, Kokubu, JP;
Hidehiro Takenoshita, Kokubu, JP;
Inventors:
Assignee:
Kyocera Corporation, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22C 9/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A ferrite core comprising a sintered oxide containing at least 48.6 to 53.9 mol % of Fe on FeObasis, 12.3 to 35.2 mol % of Ni on NiO basis and 16.4 to 37.0 mol % of Zn on ZnO basis as metal elements, and contains a crystal phase comprising two or more kinds of solid solutions selected from NiFeO, ZnFeOand FeFeO, wherein full width at half maximum of a diffraction peak, of crystal phase of which diffraction angle 2θ is in a range from 34.6 to 36.4° as measured by X-ray diffraction analysis using Cu—Kα beam, is 0.4° or less.