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:
Nov. 19, 2024
Filed:
Jul. 07, 2022
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventors:
Ko Watanabe, Fukui, JP;
Kazuhito Akada, Echizen, JP;
Yuta Kuribara, Makati, PH;
Yoshiyuki Hayashi, Fukui, JP;
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C23F 1/40 (2006.01); C22B 1/00 (2006.01); C23F 1/44 (2006.01);
U.S. Cl.
CPC ...
C23F 1/40 (2013.01); C22B 1/005 (2013.01); C23F 1/44 (2013.01);
Abstract
A method for recycling a rare earth magnet is described. The rare earth magnet has a film containing Ni on the surface thereof, and the method involves immersing the rare earth magnet in a stripping solution containing a derivative of nitrobenzene, ethylenediamine, and ammonia. This strips the Ni on the surface of the rare earth magnet without deteriorating the characteristics of the rare earth magnet, thereby improving its product yield.