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. 23, 2011
Filed:
Jun. 30, 2009
Shunji Suzuki, Nagoya, JP;
Hayato Hashino, Nagoya, JP;
Masahiro Hiraoka, Nagoya, JP;
Takao Yabumi, Nagoya, JP;
Shunji Suzuki, Nagoya, JP;
Hayato Hashino, Nagoya, JP;
Masahiro Hiraoka, Nagoya, JP;
Takao Yabumi, Nagoya, JP;
Daido Tokushuko Kabushiki Kaisha, Nagoya, JP;
Abstract
The present invention provides a rare earth magnet, which is formed through at least hot molding, the rare earth magnet containing grains including an RXB phase as a main phase, and a grain boundary phase surrounding peripheries of the grains, in which R is at least one element selected from the group consisting of Nd, Pr, Dy, Tb and Ho, and X is Fe or Fe with a part being substituted by Co; in which an element RH is more concentrated in the grain boundary phase than in the grains, in which the element RH is at least one element selected from the group consisting of Dy, Tb and Ho; and the element RH is present with a substantially constant concentration distribution from the surface part of the magnet to the central part of the magnet.