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:
Dec. 19, 2017
Filed:
Feb. 18, 2015
Applicant:
Shin-etsu Chemical Co., Ltd, Tokyo, JP;
Inventors:
Yukihiro Kuribayashi, Echizen, JP;
Yoshifumi Nagasaki, Echizen, JP;
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C25D 7/00 (2006.01); H01F 41/00 (2006.01); H01F 1/053 (2006.01); C25D 5/34 (2006.01); C25D 5/50 (2006.01);
U.S. Cl.
CPC ...
C25D 7/001 (2013.01); C25D 5/34 (2013.01); C25D 5/50 (2013.01); H01F 1/053 (2013.01); H01F 41/005 (2013.01);
Abstract
A rare earth permanent magnet is prepared by immersing a portion of a sintered magnet body of R—Fe—B composition (wherein Ris a rare earth element) in an electrodepositing bath of a powder dispersed in a solvent, the powder comprising an oxide, fluoride, oxyfluoride, hydride or rare earth alloy of a rare earth element, effecting electrodeposition for letting the powder deposit on a region of the surface of the magnet body, and heat treating the magnet body with the powder deposited thereon at a temperature below the sintering temperature in vacuum or in an inert gas.