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. 13, 2004
Filed:
Apr. 22, 2002
Applicant:
Inventor:
Craig W. Brown, The Dalles, OR (US);
Assignee:
Northwest Aluminum Technologies, Seattle, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C 3/08 ; C25C 3/12 ; C25C 3/06 ;
U.S. Cl.
CPC ...
C25C 3/08 ; C25C 3/12 ; C25C 3/06 ;
Abstract
A method of producing aluminum from alumina in an electrolytic cell including using a cathode comprised of a base material having low electrical conductivity and wettable with molten aluminum to form a reaction layer having a high electrical conductivity on said base layer and a cathode bar extending from said reaction layer through said base material to conduct electrical current from said reaction layer.