(19)

(11)

EP 3 775 321 A1

(12)

(43) Date of publication: 17.02.2021 Bulletin 2021/07 (21) Application number: 19720060.3 (22) Date of filing: 11.04.2019

(51) International Patent Classification (IPC):  C25B 11/04(2021.01) C25B 3/04(2006.01) (86) International application number: PCT/EP2019/059238 (87) International publication number: WO 2019/197527 (17.10.2019 Gazette 2019/42)

(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: 11.04.2018 IS 50217 (71) Applicant: Haskoli Islands 102 Reykjavik (IS)	(72) Inventor: SKULASON, Egill 101 Reykjavík (IS) (74) Representative: Arnason Faktor  Intellectual Property Consulting Gudridarstig 2-4 113 Reykjavik 113 Reykjavik (IS)