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(11)

EP 4 511 539 A1

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(43) Date of publication: 26.02.2025 Bulletin 2025/09 (21) Application number: 24723755.5 (22) Date of filing: 30.04.2024

(51) International Patent Classification (IPC):  E01C 11/24(2006.01) E01C 13/08(2006.01) C09K 5/06(2006.01) (52) Cooperative Patent Classification (CPC): E01C 11/24; E01C 13/08; C09K 5/063 (86) International application number: PCT/EP2024/061895 (87) International publication number: WO 2024/227779 (07.11.2024 Gazette 2024/45)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 04.05.2023 EP 23171678 07.07.2023 US 202318348922 (71) Applicant: APT Asia pacific Pty. Ltd. Dandenong, Victoria 3175 (AU)	(72) Inventors: TRITT, James Michael Beaconsfield, Victoria 3807 (AU) CORBO, Robert Cranbourne North, Victoria 3977 (AU) LUDDU, Sumeet Chirnside Park, Victoria 3116 (AU) (74) Representative: Richardt Patentanwälte PartG mbB  Wilhelmstraße 7 65185 Wiesbaden 65185 Wiesbaden (DE)