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. 06, 1989
Filed:
Aug. 07, 1987
Applicant:
Inventors:
Masao Oishi, Neyagawa, JP;
Takao Saito, Toyonaka, JP;
Katsukiyo Ishikawa, Kuze, JP;
Masanori Abe, Tokyo, JP;
Yutaka Tamaura, Yokohama, JP;
Assignee:
Nippon Paint Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F / ;
U.S. Cl.
CPC ...
427 38 ; 427128 ; 427129 ; 427130 ; 427240 ; 427346 ; 427425 ; 427426 ; 427427 ; 427428 ; 4274431 ;
Abstract
Disclosed is a method for forming a ferrite film comprising, flowing downward or spraying an aqueous oxidizing agent solution on a substrate in a deoxidized atmosphere and simultaneously supplying an aqueous deoxidized solution containing at least ferrous ions, to effect a ferrite crystallization reaction on the substrate. This ferrite film is used for magnetic recording media, photomagnetic recording media, magnetic heads, etc.