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:
Jun. 29, 1999
Filed:
Mar. 26, 1998
Applicant:
Inventors:
Tatsuya Shimazaki, Akita, JP;
Yutaka Saito, Akita, JP;
Assignee:
TDK Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
252 626 ; 252 6262 ; 252 6263 ; 252 6259 ; 343787 ; 343788 ; 336177 ; 336233 ;
Abstract
To an oxide magnetic material consisting essentially of, calculated as oxides, 15-30 mol % of Fe.sub.2 O.sub.3, 6-12 mol % of CuO, and 58-79 mol % of NiO as main ingredients, 1.5-4.5% by weight of PbO, 1.0-3.7% by weight of SiO.sub.2, 0.7-1.0% by weight of CoO, and 0.01-1.0% by weight of ZnO are added as additives. The material is suited to form magnetic cores for operation in high-frequency bands.