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. 13, 1994
Filed:
Sep. 14, 1993
Applicant:
Inventors:
Takashi Kodama, Nagaokakyo, JP;
Yasunobu Yoneda, Takefu, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
252 6259 ; 252 6256 ; 252 626 ; 252 6264 ;
Abstract
An oxide magnetic material comprises a basic composition consisting essentially of 45.0 to 49.0 mol % of Fe.sub.2 O.sub.3, 3.0 to 9.0 mol % of MgO, 1.0 to 4.0 mol % of CuO, 0.1 to 1.5 mol % of Bi.sub.2 O.sub.3, and the balance of NiO and additives, and contains, as additives, SiO.sub.2 and Co.sub.3 O.sub.4 incorporated in the basic composition in an amount of 0.1 to 0.5 wt % of SiO.sub.2 and 0.05 to 0.35 wt % of Co.sub.3 O.sub.4.