(19)

(11)

EP 4 392 589 A1

(12)

(43) Date of publication: 03.07.2024 Bulletin 2024/27 (21) Application number: 22859594.8 (22) Date of filing: 18.08.2022

(51) International Patent Classification (IPC):  C22C 1/02(2006.01) C22C 21/02(2006.01) (52) Cooperative Patent Classification (CPC): C22C 21/02; C22C 1/026; C22F 1/043 (86) International application number: PCT/AU2022/050922 (87) International publication number: WO 2023/023705 (02.03.2023 Gazette 2023/09)

(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: 23.08.2021 AU 2021902651 (71) Applicant: A.W. BELL PTY. LTD. Dandenong South, VIC 3175 (AU)	(72) Inventor: LUMLEY, Roger, Neil Clayton South, Victoria 3169 (AU) (74) Representative: HGF  HGF Limited 1 City Walk Leeds LS11 9DX Leeds LS11 9DX (GB)