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EP 4 739 814 A1

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(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24743699.1 (22) Date of filing: 04.07.2024

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C25B 9/75(2021.01) C25B 9/67(2021.01) C25B 9/77(2021.01) (52) Cooperative Patent Classification (CPC): C25B 1/04; C25B 9/75; C25B 9/67; C25B 9/77; C25B 9/70; C25B 9/73; C25B 15/08; C25B 11/036; Y02E 60/36 (86) International application number: PCT/EP2024/068813 (87) International publication number: WO 2025/008441 (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: 06.07.2023 IT 202300014109 (71) Applicant: Industrie De Nora S.p.A. 20134 Milano (IT)	(72) Inventors: CARMINATI, Elena 20134 Milano (IT) GOZZO, Andrea 20134 Milano (IT) IACOPETTI, Luciano 20134 Milano (IT) (74) Representative: De Bortoli, Tiziano et al Zanoli & Giavarini SpA Via Melchiorre Gioia, 64 20125 Milano 20125 Milano (IT)