(19)

(11)

EP 4 314 365 A2

(12)

(88) Date of publication A3: 15.12.2022 (43) Date of publication: 07.02.2024 Bulletin 2024/06 (21) Application number: 22788624.9 (22) Date of filing: 23.03.2022

(51) International Patent Classification (IPC):  C22B 26/12(2006.01) H02S 10/12(2014.01) B01D 15/00(2006.01) (52) Cooperative Patent Classification (CPC): C22B 26/12; B01D 15/00; C22B 3/24; B01D 2313/54; B01D 2313/367; B01D 2311/2626; B01D 2317/06; B01D 2317/04 (86) International application number: PCT/US2022/021500 (87) International publication number: WO 2022/221012 (20.10.2022 Gazette 2022/42)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 23.03.2021 US 202163164698 P (71) Applicant: International Battery Metals, Ltd. Vancouver, BC V6C 2T6 (CA)	(72) Inventor: BURBA, John, L. Vancouver (US) (74) Representative: Turner, Craig Robert  AA Thornton IP LLP 8th Floor, 125 Old Broad Street London EC2N 1AR London EC2N 1AR (GB)