(19)

(11)

EP 4 453 278 A1

(12)

(43) Date of publication: 30.10.2024 Bulletin 2024/44 (21) Application number: 22835138.3 (22) Date of filing: 20.12.2022

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C25B 11/03(2021.01) C25B 15/08(2006.01) C25B 9/19(2021.01) C25B 15/04(2006.01) (52) Cooperative Patent Classification (CPC): C25B 1/04; C25B 15/08; C25B 15/04; C25B 11/03; C25B 9/19 (86) International application number: PCT/IB2022/062537 (87) International publication number: WO 2023/119153 (29.06.2023 Gazette 2023/26)

(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: 23.12.2021 IT 202100032519 (71) Applicant: Multim S.r.l. 20151 Milano (MI) (IT)	(72) Inventor: ANTOLINI, Claudio 20151 Milano MI (IT) (74) Representative: Concone, Emanuele et al Società Italiana Brevetti S.p.A. Via Carducci 8 20123 Milano 20123 Milano (IT)