(19)

(11)

EP 3 606 877 A1

(12)

(43) Date of publication: 12.02.2020 Bulletin 2020/07 (21) Application number: 18719241.4 (22) Date of filing: 09.04.2018

(51) International Patent Classification (IPC):  C02F 1/461(2006.01) C02F 1/28(2006.01) C02F 101/30(2006.01) (86) International application number: PCT/GB2018/050936 (87) International publication number: WO 2018/185500 (11.10.2018 Gazette 2018/41)

(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: 07.04.2017 GB 201705646 (71) Applicant: Arvia Technology Limited Runcorn, Cheshire WA7 4EB (GB)	(72) Inventors: BROWN, Nigel Willis Alsager Stoke-on-Trent ST7 2PW (GB) KHAN, Mikael Runcorn Cheshire WA7 4EB (GB) (74) Representative: Pinnington, Giles Oliver  Marks & Clerk LLP 1 New York Street Manchester M1 4HD Manchester M1 4HD (GB)