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:
Apr. 15, 1997
Filed:
Jun. 06, 1995
Ahmad Dadgar, West Lafayette, IN (US);
Jonathan N Howarth, West Lafayette, IN (US);
Rodney H Sergent, West Lafayette, IN (US);
Nicolai A Favstritsky, West Lafayette, IN (US);
Julie A McKeown, West Lafayette, IN (US);
Dennis W Borden, West Lafayette, IN (US);
Brent M Sanders, West Lafayette, IN (US);
Jane Likens, West Lafayette, IN (US);
Great Lakes Chemical Corporation, West Lafayette, IN (US);
Abstract
A process for leaching gold, silver, platinum and palladium wherein an aqueous leaching solution containing bromine and bromide ion contacts a precious metal source to produce an aqueous leachate. A precursor composition for producing an aqueous leaching solution for leaching gold, silver, platinum and palladium. A process for electrogenerating bromine and a process for leaching gold, silver, platinum and palladium wherein bromine is electrogenerated and contacts a precious metal source to produce an aqueous leachate. A process for leaching gold, silver, platinum and palladium wherein bromine is electrogenerated from a solution containing chloride ions and bromide ions.