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. 03, 2021
Filed:
Sep. 23, 2019
Applicant:
Nemaska Lithium Inc., Québec, CA;
Inventors:
Jean-François Magnan, Neuville, CA;
Guy Bourassa, Québec, CA;
Gary Pearse, Ottawa, CA;
Peter Symons, Williamsville, NY (US);
J. David Genders, Elma, NY (US);
Assignee:
NEMASKA LITHIUM INC., Quebec, CA;
Primary Examiner:
Int. Cl.
CPC ...
C25B 15/02 (2006.01); C25B 1/16 (2006.01); B01D 61/44 (2006.01); C25B 9/19 (2021.01); C25B 1/00 (2021.01); C25B 13/02 (2006.01);
U.S. Cl.
CPC ...
C25B 15/02 (2013.01); B01D 61/44 (2013.01); B01D 61/445 (2013.01); C25B 1/00 (2013.01); C25B 1/16 (2013.01); C25B 9/19 (2021.01); C25B 13/02 (2013.01); Y02E 60/36 (2013.01);
Abstract
There are provided processes for preparing lithium hydroxide that comprise submitting an aqueous composition comprising a lithium compound to an electrolysis or an electrodialysis under conditions suitable for converting at least a portion of the lithium compound into lithium hydroxide. For example, the lithium compound can be lithium sulphate and the aqueous composition can be at least substantially maintained at a pH having a value of about 1 to about 4.