(19)

(11)

EP 4 291 727 A1

(12)

(43) Date of publication: 20.12.2023 Bulletin 2023/51 (21) Application number: 22705106.7 (22) Date of filing: 09.02.2022

(51) International Patent Classification (IPC):  E02D 29/12(2006.01) E02D 29/14(2006.01) (52) Cooperative Patent Classification (CPC): E02D 29/12; E02D 29/14; E02D 29/1409; E02D 29/121 (86) International application number: PCT/GB2022/050346 (87) International publication number: WO 2022/172002 (18.08.2022 Gazette 2022/33)

(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: 11.02.2021 GB 202101876 (71) Applicant: CUBIS SYSTEMS LIMITED Dunmurry, Belfast BT17 9NU (GB)	(72) Inventors: CLEMENTS, Claire Northern Ireland BT67 0TF (GB) BROOKER, Steven William Northern Ireland BT66-7GE (GB) (74) Representative: Wilson Gunn  Blackfriars House The Parsonage 5th Floor Manchester M3 2JA Manchester M3 2JA (GB)