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:
Mar. 29, 2011
Filed:
Mar. 12, 2007
Yuichi Satsu, Hitachi, JP;
Matahiro Komuro, Hitachi, JP;
Takao Imagawa, Mito, JP;
Takashi Yasuhara, Yotsukaido, JP;
Yutaka Matsunobu, Mito, JP;
Yuichi Satsu, Hitachi, JP;
Matahiro Komuro, Hitachi, JP;
Takao Imagawa, Mito, JP;
Takashi Yasuhara, Yotsukaido, JP;
Yutaka Matsunobu, Mito, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The object of the present invention is to both reduce costs and improve magnetic characteristics of rare-earth bond magnets in which magnetic material is bound with a binding agent. In order to achieve this object, magnetic characteristics of a magnet are improved by performing cold forming on rare-earth magnetic powder by itself with no resin added. Then, in order to provide strength for the magnet, a low-viscosity SiOprecursor is infiltrated and thermoset in the magnet shaped body. As a result, it is possible to obtain a rare-earth bond magnet in which magnetic characteristics are improved and costs are reduced.