(19)

(11)

EP 4 308 738 A1

(12)

(43) Date of publication: 24.01.2024 Bulletin 2024/04 (21) Application number: 22711335.4 (22) Date of filing: 17.03.2022

(51) International Patent Classification (IPC):  C22B 7/00(2006.01) C22B 11/00(2006.01) (52) Cooperative Patent Classification (CPC): C22B 11/00; C22B 7/00; Y02P 10/20 (86) International application number: PCT/IB2022/052418 (87) International publication number: WO 2022/195527 (22.09.2022 Gazette 2022/38)

(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: 19.03.2021 NL 1043973 (71) Applicant: Circular Industries B.V. 2162 CS Lisse (NL)	(72) Inventors: WAGEMAKER, Niels Willem 1127 PV Den Ilp (NL) REITSMA, Jan Marinus 1359 JA Almere (NL) VAN ZANTEN, Martinus Eduard Albertus 2162 CS Lisse (NL) (74) Representative: Simmons & Simmons LLP  Claude Debussylaan 247 1082 MC Amsterdam 1082 MC Amsterdam (NL)