(19)

(11)

EP 4 251 785 A1

(12)

(43) Date of publication: 04.10.2023 Bulletin 2023/40 (21) Application number: 20828062.8 (22) Date of filing: 27.11.2020

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C25B 9/65(2021.01) C25B 9/19(2021.01) H01M 16/00(2006.01) (52) Cooperative Patent Classification (CPC): C25B 1/04; C25B 9/65; C25B 9/19 (86) International application number: PCT/GB2020/053056 (87) International publication number: WO 2022/112732 (02.06.2022 Gazette 2022/22)

(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 (71) Applicant: Clean Power Hydrogen Group Limited Doncaster DN2 4BL (GB)	(72) Inventor: WILLIAMSON, Nigel David Lister Dronfield S18 2EX (GB) (74) Representative: Mummery, Thomas Zack  Reddie & Grose LLP The White Chapel Building 10 Whitechapel High Street London E1 8QS London E1 8QS (GB)