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. 03, 1985
Filed:
Oct. 29, 1984
Applicant:
Inventor:
Akira Shibata, Yokohama, JP;
Assignee:
Chugai Denki Kogyo, K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23F / ;
U.S. Cl.
CPC ...
148-635 ;
Abstract
A method for preparing cores and the like such as magnetic recording head cores. They are made from metallic alloy oxides such as ferrite and used as electric, electronic, or magnetic elements of electric appliances such as tape recorders and televisions. The method is characterized by covering alloy compacts in part or as whole by silver and then baking them in an oxygen atmosphere for a predetermined time and at a predetermined temperature, whereby constituents of the alloy compacts are converted to oxides under strict control. Silver converging baked cores may be utilized for attaching terminals.