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:
Jul. 26, 2016
Filed:
Apr. 06, 2015
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventors:
Hiroto Sugahara, Echizen, JP;
Takehisa Minowa, Echizen, JP;
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C25D 21/18 (2006.01); B01D 11/04 (2006.01); C22B 59/00 (2006.01);
U.S. Cl.
CPC ...
C25D 21/18 (2013.01); B01D 11/04 (2013.01); C22B 59/00 (2013.01);
Abstract
In an extraction tank, a plating solution containing rare earth metal ions is treated with an extracting solution of an extractant in a water-insoluble organic solvent. Extraction treatment is carried out by atomizing the extracting solution through a lower nozzle into the plating solution in the tank lower zone, and atomizing the plating solution through an upper nozzle into the extracting solution in the tank upper zone, for thereby bringing the plating solution in contact with the extracting solution to extract rare earth metal ions from the plating solution into the extractant for removal.