(19)
(11) EP 4 824 327 A1

(12)

(43) Date of publication:
21.10.2026 Bulletin 2026/43

(21) Application number: 24903020.6

(22) Date of filing: 13.12.2024
(51) International Patent Classification (IPC): 
C25B 9/70(2021.01)
C25B 9/77(2021.01)
 C25B 1/04(2021.01)
C25B 15/08(2006.01)
(52) Cooperative Patent Classification (CPC):
Y02E 60/36; C25B 9/77; C25B 1/04; C25B 9/75; C25B 15/085; C25B 15/087
(86) International application number:
PCT/DK2024/050301
(87) International publication number:
WO 2025/124674 (19.06.2025 Gazette 2025/25)
(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:
GE KH MA MD TN

(30) Priority: 14.12.2023 DK PA202330403

(71) Applicant: Stiesdahl Hydrogen A/S
7323 Give (DK)

(72) Inventors:
  • STIESDAL, Henrik
    5000 Odense C (DK)
  • GELLRICH, Florian
    2500 Valby (DK)
  • VOIGT, Niels Vinter
    8200 Aarhus N (DK)

(74) Representative: Medenwaldt, Robin 
Tropa ApS Aagade 97, 1st Floor
8370 Hadsten
8370 Hadsten (DK)

   


(54) ALKALINE ELECTROLYSER AND A METHOD FOR ITS OPERATION INCLUDING GAS PURGING