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:
Dec. 07, 2010
Filed:
Mar. 18, 2005
Applicants:
Vittorio DE Nora, Veyras, CH;
Thinh T. Nguyen, Onex, CH;
Inventors:
Vittorio De Nora, Veyras, CH;
Thinh T. Nguyen, Onex, CH;
Assignee:
Riotinto Alcan International Limited, Montreal, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C 3/06 (2006.01); C25C 3/08 (2006.01); C25C 3/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
An anode for electrowinning of aluminium from alumina comprises a cobalt-containing metallic outer part that is covered with an integral oxide layer containing predominantly cobalt oxide CoO. The integral oxide layer can be formed by surface oxidation of cobalt from the metallic outer part before use.