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. 09, 2003
Filed:
Nov. 21, 2001
Applicant:
Inventors:
Assignee:
Minebea Co., Ltd., Kitasaku-gun, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01B 1/08 ; C04B 3/526 ; B29B 1/700 ;
U.S. Cl.
CPC ...
H01B 1/08 ; C04B 3/526 ; B29B 1/700 ;
Abstract
The present invention provides a production process of a Mn—Zn ferrite that enables wastes of sintered cores to be recycled without serious difficulties in sintering. The production process comprises recycling a powder obtained by milling a sintered Mn—Zn ferrite, thereby obtaining a sintered core having a component composition including 44.0 to 49.8 mol % Fe O , 4.0 to 26.5 mol % ZnO, 1.0 to 3.0 mol % CoO, 0.02 to 1.00 mol % Mn O and a remainder MnO.