(19)

(11)

EP 4 581 194 A2

(12)

(88) Date of publication A3: 02.05.2024 (43) Date of publication: 09.07.2025 Bulletin 2025/28 (21) Application number: 23768598.7 (22) Date of filing: 31.08.2023

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C25B 11/097(2021.01) C25B 9/23(2021.01) (52) Cooperative Patent Classification (CPC): C25B 9/23; C25B 1/04; C25B 11/097; Y02E 60/36 (86) International application number: PCT/GB2023/052264 (87) International publication number: WO 2024/047362 (07.03.2024 Gazette 2024/10)

(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: 01.09.2022 GB 202212734 (71) Applicant: Oort Energy Ltd Bristol, BS14 0BY (GB)	(72) Inventor: VAN DIJK, Nicholas Joseph Rotherham Yorkshire S65 1ED (GB) (74) Representative: Watermeyer, Nicholas  Withers & Rogers LLP 2 London Bridge London SE1 9RA London SE1 9RA (GB)