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:
Oct. 16, 1984
Filed:
Dec. 08, 1983
Masanori Abe, Tokyo, JP;
Yutaka Tamaura, Yokohama, JP;
Denki Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Mitsubishi Chemical Industries Ltd., Tokyo, JP;
Abstract
A process for forming a ferrite film, which is characterized in that in an aqueous solution containing at least ferrous ions as metal ions, ferrous hydroxide ions FeOH.sup.+, or FeOH.sup.+ and other metal hydroxide ions, are uniformly adsorbed on the surface of a solid by an interfacial reaction at an interfacial boundary between the solid and the aqueous solution; and the adsorbed FeOH.sup.+ is oxidized to FeOH.sup.2+, whereupon FeOH.sup.2+ and metal hydroxide ions in the aqueous solution undergo a ferrite crystallization reaction to precipitate a ferrite layer on the surface of the solid.