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. 23, 1979
Filed:
Mar. 02, 1978
Applicant:
Inventors:
Victor A Ettel, Mississauga, CA;
Eric A Devuyst, Mississauga, CA;
Ramamritham Sridhar, Mississauga, CA;
Charles E O'Neill, Mississauga, CA;
Assignee:
The International Nickel Company, Inc., New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22B / ;
U.S. Cl.
CPC ...
75117 ; 75-7 ; 75108 ; 75115 ; 75119 ; 423 36 ; 423 41 ; 423141 ;
Abstract
A sulfide containing copper and one or more of iron, nickel and cobalt, is dead-roasted at a temperature of 750.degree. C or above, then subjected to a pressure leach under reducing conditions to produce elemental copper and an aqueous solution of the other metals.