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(11)

EP 3 774 004 A1

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(43) Date of publication: 17.02.2021 Bulletin 2021/07 (21) Application number: 19777936.6 (22) Date of filing: 01.04.2019

(51) International Patent Classification (IPC):  B01D 71/26(2006.01) B01D 69/12(2006.01) B01D 71/28(2006.01) (86) International application number: PCT/IB2019/052649 (87) International publication number: WO 2019/186518 (03.10.2019 Gazette 2019/40)

(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: 30.03.2018 AU 2018901072 (71) Applicant: Hydroxsys Holdings Limited Parnell, Auckland 1052 (NZ)	(72) Inventors: GIFFORD, Dylan Townshend Hastings 4180 (NZ) MILLS, Sophie Jayne Auckland 0622 (NZ) PASCOE, Gordon Brett North Hamilton 3210 (NZ) RANAWEERA, Chathuni Duleesha Auckland 1041 (NZ) WHEELWRIGHT, Walt Auckland 1072 (NZ) (74) Representative: Ribeiro, James Michael  Withers & Rogers LLP 4 More London Riverside London SE1 2AU London SE1 2AU (GB)