Sughrue, Mion, Zinn, Macpeak & Seas
Method for producing anisotropic rare earth magnet
 A method for producing an anisotropic rare earth magnet is improved by extruding using a compacted material formed in a shape having difference in level between the center part to be in contact with the end face of a punch and the outer peripheral part to be faced with a molding cavity formed between the punch and a cylindrical die of a mold. 
Daido Tokushuko Kabushiki Kaisha
C B B H H
C22C B22F B30B H01F H01F
inventional inventional inventional inventional inventional
Hiyoshi Norio Yasuaki
Yamada Yoshikawa Kasai