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. 15, 1981
Filed:
Mar. 28, 1980
Applicant:
Inventors:
Toshio Kobayashi, Hinodemachi, JP;
Tetsu Oi, Tokyo, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C30B / ; C30B / ; C30B / ;
U.S. Cl.
CPC ...
1566 / ; 1566 / ; 156620 ; 156D / ; 156D / ;
Abstract
A method of producing ferrite single crystals which comprises steps of melting a ferrite starting material in oxygen atmosphere containing nitrogen, argon or the like of a partial pressure of at least 0.1 atm. and solidifying the melt. According to this method, the popping out of the gas contained in the melt is prevented and the ferrite single crystals of high qualities can be produced easily.