(19)

(11)

EP 4 448 839 A2

(12)

(88) Date of publication A3: 26.10.2023 (43) Date of publication: 23.10.2024 Bulletin 2024/43 (21) Application number: 22839201.5 (22) Date of filing: 14.12.2022

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C25B 9/77(2021.01) C25B 9/67(2021.01) C25B 15/08(2006.01) (52) Cooperative Patent Classification (CPC): C25B 1/04; C25B 9/67; C25B 9/77; C25B 15/08 (86) International application number: PCT/EP2022/085925 (87) International publication number: WO 2023/111060 (22.06.2023 Gazette 2023/25)

(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: 17.12.2021 DK PA202170630 22.03.2022 DK PA202270124 (71) Applicant: Danfoss A/S 6430 Nordborg (DK)	(72) Inventor: NIELSEN, Helge 6430 Nordborg (DK) (74) Representative: Inspicos P/S  Agern Allé 24 2970 Hørsholm 2970 Hørsholm (DK)