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. 04, 2012
Filed:
Nov. 06, 2007
Applicants:
Ramachandran Vasant Kumar, Cambridge, GB;
Vega Petrova Kotzeva, Basel, CH;
Seref Sonmez, Istanbul, TR;
Inventors:
Ramachandran Vasant Kumar, Cambridge, GB;
Vega Petrova Kotzeva, Basel, CH;
Seref Sonmez, Istanbul, TR;
Assignee:
Cambridge Enterprise Limited, Cambridge, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01G 21/00 (2006.01); C01G 21/06 (2006.01); C22B 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention describes a method of recycling lead from lead containing waste, the method comprising the steps of mixing the battery paste with aqueous citric acid solution so as to generate lead citrate; isolating lead citrate from the aqueous solution; and converting the lead citrate to lead and/or lead oxide.