(19)

(11)

EP 4 355 921 A1

(12)

(43) Date of publication: 24.04.2024 Bulletin 2024/17 (21) Application number: 22740443.1 (22) Date of filing: 14.06.2022

(51) International Patent Classification (IPC):  C22B 7/00(2006.01) B03C 1/00(2006.01) B02C 1/00(2006.01) B03C 7/00(2006.01) (52) Cooperative Patent Classification (CPC): C22B 7/005; B03C 3/10; B03C 3/41; B03C 3/49; B03C 3/743; B03C 1/22; B03C 1/14; B03C 2201/20; B02C 23/08 (86) International application number: PCT/GB2022/051497 (87) International publication number: WO 2022/263812 (22.12.2022 Gazette 2022/51)

(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: 16.06.2021 GB 202108590 (71) Applicant: The University Of Birmingham Birmingham B15 2TT (GB)	(72) Inventors: KENDRICK, Emma Birmingham West Midlands B15 2TT (GB) SOMMERVILLE, Roberto Birmingham West Midlands B15 2TT (GB) (74) Representative: HGF  HGF Limited 1 City Walk Leeds LS11 9DX Leeds LS11 9DX (GB)