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:
Sep. 10, 2002
Filed:
May. 30, 2000
Applicant:
Inventor:
Michael Jonathan Lain, Abingdon, GB;
Assignee:
Accentus Plc, Didcot, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 1/054 ;
U.S. Cl.
CPC ...
H01M 1/054 ;
Abstract
Lithium ion cells in which the cathode contains a particulate insertion material and a binder are cut open in a dry, inert atmosphere ( ). The cell components are treated with a first organic solvent ( ) to dissolve the electrolyte, so that this can be reused. They are then treated with a second organic solvent ( ) to dissolve the binder, and the particulate material separated ( ) from the solution of binder. The insertion material is then reduced ( ) so that it does not contain intercalated lithium. The reduction process may be performed electrolytically.