(19)

(11)

EP 4 739 815 A1

(12)

(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24746776.4 (22) Date of filing: 01.07.2024

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C25B 11/031(2021.01) C25B 9/75(2021.01) C25B 15/08(2006.01) (52) Cooperative Patent Classification (CPC): C25B 1/04; C25B 11/031; C25B 9/75; C25B 11/071; C25B 11/065; C25B 11/067; C25B 9/65; C25B 9/77 (86) International application number: PCT/GB2024/051708 (87) International publication number: WO 2025/008614 (09.01.2025 Gazette 2025/02)

(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: 03.07.2023 GB 202310119 (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)