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:
Feb. 06, 2018
Filed:
Jun. 24, 2010
Shin-ichi Ohkoshi, Tokyo, JP;
Asuka Namai, Tokyo, JP;
Kazuyuki Takami, Tokyo, JP;
Koutaro Tomita, Tokyo, JP;
Shin-Ichi Ohkoshi, Tokyo, JP;
Asuka Namai, Tokyo, JP;
Kazuyuki Takami, Tokyo, JP;
Koutaro Tomita, Tokyo, JP;
The University of Tokyo, Tokyo, JP;
Dowa Electronics Materials Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a process for production of a magnetic thin film which has insulation properties, serves as a permanent magnet, and has improved residual magnetization in comparison with prior arts, the magnetic thin film, and a magnetic material. When a magnetic thin filmis formed, an external magnetic field with a predetermined intensity is applied to a coating liquid containing magnetic particles containing epsilon-type iron-oxide-based compounds which have insulation properties and which serve as a permanent magnet, and the coating liquid is let cured in order to form the magnetic thin film. Accordingly, the magnetic particles containing the epsilon-type iron-oxide-based compounds can be fixed while being oriented regularly in a magnetization direction. This realizes the process for production of the magnetic thin filmwhich has insulation properties and which serve as a permanent magnet, the magnetic thin film, and a magnetic material