(19)

(11)

EP 4 433 627 A2

(12)

(88) Date of publication A3: 03.08.2023 (43) Date of publication: 25.09.2024 Bulletin 2024/39 (21) Application number: 22817549.3 (22) Date of filing: 09.11.2022

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C25B 5/00(2006.01) C25B 9/70(2021.01) C25B 15/02(2021.01) H01M 8/18(2006.01) C25B 1/042(2021.01) C25B 9/05(2021.01) C25B 11/032(2021.01) C25B 15/08(2006.01) (52) Cooperative Patent Classification (CPC): C25B 1/04; C25B 1/042; C25B 15/087; C25B 15/02; C25B 11/032; C25B 9/70; C25B 9/05; C25B 5/00; H01M 8/186; Y02E 60/36; H01M 8/0656 (86) International application number: PCT/EP2022/081275 (87) International publication number: WO 2023/088749 (25.05.2023 Gazette 2023/21)

(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: 18.11.2021 GB 202116618 (71) Applicant: Geary, Paul Francis Nottingham NG4 2HD (GB)	(72) Inventor: Geary, Paul Francis Nottingham NG4 2HD (GB) (74) Representative: Harner-Foreman, Frank Jakob  Vindeco IP Limited Richmond House, Walkern Road Stevenage SG1 3QP Stevenage SG1 3QP (GB)