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:
Jan. 20, 1987
Filed:
Aug. 16, 1985
Applicant:
Inventors:
Rodney H Sergent, West Lafayette, IN (US);
Kenneth N Thanstrom, Sylmar, CA (US);
Assignee:
Great Lakes Chemical Corporation, West Lafayette, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C / ;
U.S. Cl.
CPC ...
204111 ; 2041 / ; 204109 ; 204110 ; 204114 ; 204117 ; 204118 ;
Abstract
A process for extracting a precious metal or base metal from a source material containing the metal. The process comprises contacting the source material with an aqueous leaching solution containing a leaching agent comprising an N-halohydantoin compound, thereby producing an aqueous leachate containing said metal. Aqueous leaching compositions, and novel electrowinning and other electrodeposition processes are also disclosed.