(19)

(11)

EP 4 139 499 A1

(12)

(43) Date of publication: 01.03.2023 Bulletin 2023/09 (21) Application number: 21724053.0 (22) Date of filing: 23.04.2021

(51) International Patent Classification (IPC):  C23F 13/06(2006.01) (52) Cooperative Patent Classification (CPC): C23F 2201/02; C23F 13/06 (86) International application number: PCT/NL2021/050269 (87) International publication number: WO 2021/215928 (28.10.2021 Gazette 2021/43)

(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: 24.04.2020 NL 1043637 (71) Applicant: GIORGINI, Roberto 2743 ML Waddinxveen (NL)	(72) Inventor: GIORGINI, Roberto 2743 ML Waddinxveen (NL) (74) Representative: EDP Patent Attorneys B.V.  Agro Business Park 2 6708 PW Wageningen 6708 PW Wageningen (NL)