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. 06, 2016
Filed:
Feb. 13, 2009
Applicants:
Tomoyuki Tada, Osaka, JP;
Yasuharu Miyoshi, Osaka, JP;
Inventors:
Tomoyuki Tada, Osaka, JP;
Yasuharu Miyoshi, Osaka, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/34 (2006.01); C04B 35/26 (2006.01); C01G 49/00 (2006.01); C04B 35/626 (2006.01); H01F 1/36 (2006.01); H01F 41/02 (2006.01);
U.S. Cl.
CPC ...
C01G 49/009 (2013.01); C04B 35/26 (2013.01); C04B 35/2616 (2013.01); C04B 35/6262 (2013.01); C04B 35/62675 (2013.01); C04B 35/62685 (2013.01); H01F 1/36 (2013.01); H01F 41/0246 (2013.01); C01P 2004/03 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01); C01P 2006/42 (2013.01); C04B 2235/3203 (2013.01); C04B 2235/3262 (2013.01); C04B 2235/3281 (2013.01); C04B 2235/3284 (2013.01); C04B 2235/3298 (2013.01); C04B 2235/6585 (2013.01); C04B 2235/786 (2013.01); H01F 1/344 (2013.01);
Abstract
A sintered ferrite material, which is obtained by adding BiOin a range from 0.5% by mass to 3% by mass against 100% by mass of a material having a composition formula of (1-x-y-z)(LiFe)O.xZnO.yFeO.zCuO wherein x, y and z satisfy 0.14≦x≦0.19, 0.48≦y<0.5 and 0≦z≦0.03 and satisfies resistivity equal to or higher than 10Ωm, initial permeability equal to or higher than 200 and saturation magnetic flux density equal to or higher than 430 mT at 23° C. and equal to or higher than 380 mT at 100° C.