(19)

(11)

EP 4 824 355 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24846704.5 (22) Date of filing: 16.12.2024

(51) International Patent Classification (IPC):  E02F 7/06(2006.01) E01C 19/00(2006.01) B07B 1/00(2006.01) (52) Cooperative Patent Classification (CPC): E02F 7/06; B07B 1/005; B07B 13/16 (86) International application number: PCT/GB2024/053128 (87) International publication number: WO 2025/125831 (19.06.2025 Gazette 2025/25)

(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: 15.12.2023 GB 202319229 (71) Applicant: Vol-Tar Limited Huddersfield, West Yorkshire HD2 1GQ (GB)	(72) Inventor: HUNTER, Samuel Joseph Stringer Huddersfield, Yorkshire HD2 1GQ (GB) (74) Representative: Appleyard Lees IP LLP  G Mill Dean Clough Industrial Park Halifax HX3 5AH Halifax HX3 5AH (GB)