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. 16, 2003
Filed:
Jan. 17, 2002
Applicant:
Inventors:
Assignee:
NEC Tokin Corporation, Miyagi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 1/706 ;
U.S. Cl.
CPC ...
H01F 1/706 ;
Abstract
A powder core is obtained by compaction-forming magnetic powder. The magnetic powder is an alloy comprising 1-10 wt % Si, 0.1-1.0 wt % O, and balance Fe. An insulator comprising SiO and MgO as main components is interposed between powder particles having a particle size of 150 &mgr;m or less.