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EP 4 798 541 A1

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(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24883396.4 (22) Date of filing: 25.10.2024

(51) International Patent Classification (IPC):  C01D 3/06(2006.01) C22B 3/02(2006.01) C01D 15/04(2006.01) C22B 26/12(2006.01) C22B 3/20(2006.01) (52) Cooperative Patent Classification (CPC): C22B 3/20; C22B 3/02; C22B 26/12; C01D 15/04; C01D 15/02; C01D 15/06; C01D 15/08 (86) International application number: PCT/US2024/052957 (87) International publication number: WO 2025/090864 (01.05.2025 Gazette 2025/18)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 27.10.2023 US 202363593706 P (71) Applicants: Lilac Solutions, Inc. Oakland, CA 94607 (US) Lilac Minerals UK Ltd London EC2V 6DN (GB)

(72) Inventors: PROCTER, Andrew Liam Oakland, California 94607 (US) GOODE, Thomas William Oakland, California 94607 (US) SIMMONS, Matthew London EC2V 6DN (GB) WILSON, Thomas Alan Oakland, California 94607 (US) GROSSO GIORDANO, Nicolás Andrés Oakland, California 94607 (US) SNYDACKER, David Henry Oakland, California 94607 (US) (74) Representative: HGF  HGF Limited 4th Floor, 1 City Square Leeds LS1 2ES Leeds LS1 2ES (GB)