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:
Aug. 09, 2005
Filed:
Sep. 27, 2001
Kenji Ohmori, Ichikawa, JP;
Toshiyuki Osako, Ichikawa, JP;
Kayo Hashiguchi, Ichikawa, JP;
Kouichi Yokosawa, Ichikawa, JP;
Kenji Ohmori, Ichikawa, JP;
Toshiyuki Osako, Ichikawa, JP;
Kayo Hashiguchi, Ichikawa, JP;
Kouichi Yokosawa, Ichikawa, JP;
Sumitomo Metal Mining Co., Ltd., Tokyo, JP;
Abstract
The objects of the present invention are to provide a highly weather-resistant iron-based magnet powder containing a rare-earth element, characterized by high coercive force in a practically important humid atmosphere, resin composition containing the same powder for bonded magnets, and bonded and compacted magnets containing the same powder. The present invention provides the above-described products by optimizing the functions and types of the phosphate coating film, uniformly formed over the surfaces of the iron-based magnet powder particles containing a rare-earth element.