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. 21, 2017
Filed:
Sep. 09, 2015
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventor:
Hiroto Sugahara, Echizen, JP;
Assignee:
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C22B 59/00 (2006.01); C22B 3/26 (2006.01); C22B 34/14 (2006.01);
U.S. Cl.
CPC ...
C22B 59/00 (2013.01); C22B 3/0005 (2013.01); C22B 34/14 (2013.01); Y02P 10/234 (2015.11);
Abstract
The inventive extraction/separation method involves the step of contacting an organic phase containing a dialkyldiglycol amic acid extractant: RRNCOCHOCHCOOH with an aqueous solution containing scandium and zirconium and/or hafnium for thereby extracting zirconium and/or hafnium into the organic phase. The purity of scandium can be efficiently increased by the simple step of solvent extraction.