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:
Dec. 30, 2003
Filed:
Aug. 31, 2001
Applicant:
Inventor:
Hiroshi Marusawa, Moriyama, JP;
Assignee:
Murata Manufacturing Co. Ltd, , JP;
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/34 ;
U.S. Cl.
CPC ...
H01F 1/34 ;
Abstract
A Y-type hexagonal oxide magnetic material is provided containing at least Fe, Co, and M (where M is at least one of Ba and Sr) as well as O, wherein the relationship of x+3&sgr;≦4 is satisfied, in which x represents the average grain size (&mgr;m) of a sintered compact thereof, and &sgr; represents the standard deviation of the grain size. When this material is used for a magnetic body of an inductor element, a high Q factor can be maintained in a high frequency range of not less than 200 MHZ.