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EP 4 476 172 A1

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(43) Date of publication: 18.12.2024 Bulletin 2024/51 (21) Application number: 23753268.4 (22) Date of filing: 09.02.2023

(51) International Patent Classification (IPC):  C01B 13/18(2006.01) B01J 37/03(2006.01) C01G 53/00(2006.01) H01M 4/131(2010.01) H01M 4/48(2010.01) H01M 4/525(2010.01) B01J 23/00(2006.01) B01J 37/08(2006.01) H01M 4/04(2006.01) H01M 4/1391(2010.01) H01M 4/505(2010.01) (52) Cooperative Patent Classification (CPC): C01B 13/18; H01M 4/04; H01M 4/131; H01M 4/1391; H01M 4/48; H01M 4/505; H01M 4/525; B01J 23/80; B01J 23/002; B01J 37/031; B01J 37/04; B01J 37/0018; B01J 37/086; B01J 37/343; B01J 2523/00; C01G 53/40; C01G 53/006; C01P 2004/61   C-Sets: B01J 2523/00, B01J 2523/17, B01J 2523/22, B01J 2523/27, B01J 2523/845, B01J 2523/847; (86) International application number: PCT/NZ2023/050008 (87) International publication number: WO 2023/153943 (17.08.2023 Gazette 2023/33)

(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: KH MA MD TN (30) Priority: 09.02.2022 WO PCT/CN2022/075610 06.09.2022 NZ 22792122 (71) Applicant: Auckland UniServices Limited Auckland 1010 (NZ)	(72) Inventors: CAO, Peng Grafton Auckland, 1010 (NZ) PU, Yuguang Grafton Auckland, 1010 (NZ) (74) Representative: Eisenführ Speiser  Patentanwälte Rechtsanwälte PartGmbB Postfach 10 60 78 28060 Bremen 28060 Bremen (DE)