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:
Aug. 17, 2010
Filed:
Oct. 14, 2008
Applicants:
Frank Hiltmann, Kriftel, DE;
Philippe Beghein, Passy, FR;
Inventors:
Frank Hiltmann, Kriftel, DE;
Philippe Beghein, Passy, FR;
Assignee:
SGL Carbon SE, Wiesbaden, DE;
Primary Examiner:
Int. Cl.
CPC ...
C25B 11/12 (2006.01); C25B 9/04 (2006.01); C25C 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
Cathodes for aluminum electrolysis cells are formed of cathode blocks and current collector bars attached to those blocks. The cathode block has a cathode slot for receiving the collector bar and has a higher depth at a center than at both lateral edges of the cathode block. Additionally, the collector bar thickness is higher at the center than at both lateral edges of the cathode block. This cathode configuration provides a more even current distribution and, thus, a longer useful lifetime of such cathodes and increases cell productivity.