(19)

(11)

EP 4 798 382 A1

(12)

(43) Date of publication: 02.09.2026 Bulletin 2026/36 (21) Application number: 24801627.1 (22) Date of filing: 25.10.2024

(51) International Patent Classification (IPC):  B05C 5/02(2006.01) B05C 13/02(2006.01) B05C 11/10(2006.01) H01M 4/88(2006.01) (52) Cooperative Patent Classification (CPC): B05C 13/02; B05C 5/022; B05C 11/1034; H01M 4/8807; B05C 9/06; Y02E 60/50 (86) International application number: PCT/GB2024/052735 (87) International publication number: WO 2025/088334 (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: 26.10.2023 GB 202316394 (71) Applicant: Johnson Matthey Hydrogen Technologies Limited London EC2V 7AD (GB)	(72) Inventors: ELLIOTT, Daniel Graham Swindon, SN5 8AT (GB) HARRISON, William Luke Swindon, SN5 8AT (GB) PAYNE, Daniel Swindon, SN5 8AT (GB) (74) Representative: Johnson Matthey Public Limited Company  Blounts Court Road, Sonning Common Intellectual Property Department Reading RG4 9NH Reading RG4 9NH (GB)