(19)

(11)

EP 4 189 139 A1

(12)

(43) Date of publication: 07.06.2023 Bulletin 2023/23 (21) Application number: 21867930.6 (22) Date of filing: 06.03.2021

(51) International Patent Classification (IPC):  C25B 1/04(2021.01) C10J 3/00(2006.01) C10G 2/00(2006.01) (52) Cooperative Patent Classification (CPC): C25B 1/04; C10J 3/00; Y02E 60/36; Y02P 20/133; C10G 2/30; C10J 2300/0959; C10J 2300/1659; C10J 2300/1684; C10J 2300/1807; C10J 2300/1846; C10J 2300/093 (86) International application number: PCT/AU2021/000024 (87) International publication number: WO 2022/056573 (24.03.2022 Gazette 2022/12)

(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: 15.09.2020 US 202017020957 28.02.2021 AU 2021201303 (71) Applicant: Umealu, Samuel Okechukwu Brighton VIC 3186 (AU)	(72) Inventor: Umealu, Samuel Okechukwu Brighton VIC 3186 (AU) (74) Representative: Sach, Greg Robert  C/o KA Filing (EU) Limited Valet Patent Services Limited Landberger Str. 302 80687 München 80687 München (DE)