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. 04, 1983
Filed:
Mar. 05, 1981
Applicant:
Inventors:
John S Batzold, Union, NJ (US);
James E Hoffmann, South Plainfield, NJ (US);
Assignee:
Exxon Research and Engineering Co., Florham Park, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C / ;
U.S. Cl.
CPC ...
204108 ; 204106 ;
Abstract
The present invention is predicated upon the discovery that in the electrowinning of copper from solutions thereof, a hydrogen fed porous catalytic anode can be caused to operate under such conditions of constant current flow whereby a dynamic equilibrium will be imposed upon the hydrogen fed anode so that the anode will behave as a normal copper anode in a refining mode. This is particularly true when such a hydrogen fed anode is deactivated by copper buildup on the surface of the electrode.