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:
Oct. 06, 2020
Filed:
May. 13, 2016
Applicant:
Aqua Metals Inc., Alameda, CA (US);
Inventors:
Stephen R. Clarke, Orinda, CA (US);
Robert Lewis Clarke, Orinda, CA (US);
Brian Dougherty, Emeryville, CA (US);
Assignee:
AQUA METALS INC., Alameda, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25C 1/18 (2006.01); C25C 7/02 (2006.01); C25C 7/04 (2006.01); H01M 10/06 (2006.01); H01M 10/54 (2006.01); C25C 7/00 (2006.01);
U.S. Cl.
CPC ...
C25C 1/18 (2013.01); C25C 7/007 (2013.01); C25C 7/02 (2013.01); C25C 7/04 (2013.01); H01M 10/06 (2013.01); H01M 10/54 (2013.01); Y02P 10/212 (2015.11); Y02W 30/84 (2015.05);
Abstract
A closed loop electrochemical process of recovery of high-purity lead uses continuous formation of adherent lead on a cathode from an electrolyte that is used to dissolve desulfated lead paste. Preferred cathodes include aluminum containing cathodes that are operated in methane sulfonic acid to produce a micro- or nanoporous mixed matrix metallic composition and lead dioxide formation at the anode is avoided using appropriate anode configurations or operating conditions