(19)

(11)

EP 3 921 458 A1

(12)

(43) Date of publication: 15.12.2021 Bulletin 2021/50 (21) Application number: 20715969.0 (22) Date of filing: 07.02.2020

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C25B 11/02(2021.01) C25B 15/08(2006.01) C25B 9/06(2006.01) C25B 11/04(2021.01) (52) Cooperative Patent Classification (CPC): Y02E 60/36; C25B 9/17; C25B 11/073; C25B 1/04; C25B 15/08; C25B 11/02 (86) International application number: PCT/PL2020/000013 (87) International publication number: WO 2020/162772 (13.08.2020 Gazette 2020/33)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 08.02.2019 PL 42884719 (71) Applicant: Felicitas A-C - Radoslaw Drozdzik 32-650 Kety (PL)	(72) Inventor: DROZDZIK, Radoslaw 32-650 Kety (PL) (74) Representative: Drelichowski, Henryk  Kancelaria Prawa Patentowego ul. Swietokrzyska 12 30-015 Kraków 30-015 Kraków (PL)