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:
May. 13, 2008
Filed:
Nov. 12, 2003
Munekatsu Shimada, Tokyo, JP;
Takae Ono, Legal Representative, Yokohama, JP;
Makoto Kano, Yokohama, JP;
Tetsurou Tayu, Kanagawa, JP;
Munekatsu Shimada, Tokyo, JP;
Takae Ono, legal representative, Yokohama, JP;
Makoto Kano, Yokohama, JP;
Tetsurou Tayu, Kanagawa, JP;
Nissan Motor Co., Ltd., Kanagawa, JP;
Abstract
A Nd—Fe—B type anisotropic exchange spring magnet is produced by a method of obtaining powder of a Nd—Fe—B type rare earth magnet alloy which comprises hard magnetic phases and soft magnetic phases wherein a minimum width of the soft magnetic phases is smaller than or equal to 1 μm and a minimum distance between the soft magnetic phases is greater than or equal to 0.1 μm, obtaining a compressed powder body by compressing the powder, and obtaining the Nd—Fe—B type anisotropic exchange spring magnet by sintering the compressed powder body using a discharge plasma sintering unit.