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(11)

EP 3 775 293 A1

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(43) Date of publication: 17.02.2021 Bulletin 2021/07 (21) Application number: 19712614.7 (22) Date of filing: 28.03.2019

(51) International Patent Classification (IPC):  C14C 3/08(2006.01) C14C 9/00(2006.01) C14C 3/28(2006.01) C14C 9/02(2006.01) (86) International application number: PCT/EP2019/057907 (87) International publication number: WO 2019/185824 (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: 28.03.2018 EP 18164636 (71) Applicants: Handelmaatschappij A. Smit en Zoon B.V. 1382 LK Weesp (NL) Exploitatiemaatschappij Smit-Vecht B.V. 1382 LK Weesp (NL)	(72) Inventors: MA, Yujie 5233 HD Den Bosch (NL) EHRHART, Wolfgang 8219 DA Lelystad (NL) VAN DER KLIS, Frits 6706 AW Wageningen (NL) MULDER, Wilhelmus Johannes 3531 GW Utrecht (NL) VAN HAVEREN, Jacco 6717 XB Ede (NL) (74) Representative: Nederlandsch Octrooibureau  P.O. Box 29720 2502 LS The Hague 2502 LS The Hague (NL)