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.

Date of Patent:
Dec. 23, 2025

Filed:

Jan. 23, 2023
Applicant:

The Regents of the University of California, Oakland, CA (US);

Inventors:

Gaurav N. Sant, Los Angeles, CA (US);

Laurent G. Pilon, Los Angeles, CA (US);

Erika Blanca Callagon La Plante, Los Angeles, CA (US);

Bu Wang, Los Angeles, CA (US);

Zongsu Wei, Los Angeles, CA (US);

Sara Vallejo Castaño, Los Angeles, CA (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C01F 11/18 (2006.01); C01F 5/14 (2006.01); C01F 5/22 (2006.01); C01F 5/24 (2006.01); C01F 11/00 (2006.01); C01F 11/16 (2006.01); C02F 1/44 (2023.01); C02F 1/469 (2023.01); C02F 1/52 (2023.01); C02F 9/00 (2023.01); C02F 1/66 (2023.01); C02F 103/06 (2006.01); C02F 103/08 (2006.01);
U.S. Cl.
CPC ...
C01F 11/181 (2013.01); C01F 5/145 (2013.01); C01F 5/22 (2013.01); C01F 5/24 (2013.01); C01F 11/005 (2013.01); C01F 11/16 (2013.01); C01F 11/185 (2013.01); C02F 1/441 (2013.01); C02F 1/442 (2013.01); C02F 1/4691 (2013.01); C02F 1/5236 (2013.01); C02F 9/00 (2013.01); C02F 1/66 (2013.01); C02F 2103/06 (2013.01); C02F 2103/08 (2013.01); Y02C 20/40 (2020.08); Y02P 40/18 (2015.11);
Abstract

Divalent ions are extracted from solids by leaching to form a divalent ion-containing solution. The divalent ion-containing solution is subjected to concentration to form a concentrated divalent ion-containing solution. Precipitation of a divalent ion hydroxide salt is induced from the concentrated divalent ion-containing solution. In other cases, the concentrated divalent ion-containing solution is exposed to carbon dioxide to induce precipitation of a divalent ion carbonate salt.


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