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:
Mar. 01, 2016
Filed:
Mar. 17, 2009
Izumi Ozeki, Ibaraki, JP;
Katsuya Kume, Ibaraki, JP;
Junichi Nakayama, Ibaraki, JP;
Yuuki Fukuda, Ibaraki, JP;
Toshinobu Hoshino, Ibaraki, JP;
Tomokazu Horio, Ibaraki, JP;
Izumi Ozeki, Ibaraki, JP;
Katsuya Kume, Ibaraki, JP;
Junichi Nakayama, Ibaraki, JP;
Yuuki Fukuda, Ibaraki, JP;
Toshinobu Hoshino, Ibaraki, JP;
Tomokazu Horio, Ibaraki, JP;
NITTO DENKO CORPORATION, Osaka, JP;
Abstract
The present invention relates to a permanent magnet obtained by wet-mixing a Dy compound or a Tb compound with a magnet raw material to coat a surface of the magnet raw material with the Dy compound or the Tb compound, and sintering a green sheet obtained by mixing the resulting magnet raw material with a resin binder and molding the resulting mixture. Since the present invention has the above-mentioned constitution, it becomes possible to sufficiently improve coercive force by Dy or Tb while decreasing the amount of Dy or Tb used. Further, it can be prevented that Dy or Tb is solid-solutionized in magnet particles to decrease residual magnetization.