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. 15, 2012
Filed:
Sep. 02, 2008
Tomoori Odaka, Osaka, JP;
Hideyuki Morimoto, Osaka, JP;
Kohshi Yoshimura, Osaka, JP;
Shigeru Takaki, Osaka, JP;
Tomoori Odaka, Osaka, JP;
Hideyuki Morimoto, Osaka, JP;
Kohshi Yoshimura, Osaka, JP;
Shigeru Takaki, Osaka, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
An R—Fe—B based anisotropic sintered magnet according to the present invention has, as a main phase, an RFeB type compound that includes a light rare-earth element RL (which is at least one of Nd and Pr) as a major rare-earth element R, and also has a heavy rare-earth element RH (which is at least one element selected from the group consisting of Dy and Tb). In the crystal lattice of the main phase, the c-axis is oriented in a predetermined direction. The magnet includes a portion in which at least two peaks of diffraction are observed within a 2θ range of 60.5 degrees to 61.5 degrees when an X-ray diffraction measurement is carried out using a CuK α ray on a plane that is located at a depth of 500 μm or less under a pole face of the magnet and that is parallel to the pole face.