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:
Oct. 30, 1984
Filed:
Apr. 04, 1983
Applicant:
Inventors:
Richard Haynes, East Windsor, NJ (US);
Anna M Jackson, Somerset County, NJ (US);
Martin K Zierold, Lakewood, NJ (US);
Assignee:
AT&T Technologies, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01G / ; C01G / ;
U.S. Cl.
CPC ...
423 22 ; 423 24 ; 7510 / ;
Abstract
We have discovered that by pretreating a thioether (R'--S--R) containing organic phase to be used as an extractant in a solvent extraction process for separating platinum group metals from base metals and/or each other in aqueous solution with a mild oxidant, e.g., cupric chloride, in an acidified aqueous phase, the tendency of stable emulsion formation during extraction can be substantially eliminated.