(19)

(11)

EP 4 824 008 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24834188.5 (22) Date of filing: 16.12.2024

(51) International Patent Classification (IPC):  C04B 28/18(2006.01) (52) Cooperative Patent Classification (CPC): C04B 28/18   C-Sets: C04B 28/18, C04B 2103/0088; C04B 28/18, C04B 14/06, C04B 14/106, C04B 14/28, C04B 22/143; (86) International application number: PCT/US2024/060372 (87) International publication number: WO 2025/129180 (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: 14.12.2023 US 202363610353 P (71) Applicant: Graymont Western Canada Inc. Richmond, British Columbia V6X 3C6 (CA)	(72) Inventors: MCFARLANE, Lucas Richmond, British Columbia V6X 3C6 (CA) ROMANIUK, Nikolas Andrei Richmond, British Columbia V6X 3C6 (CA) HARIHARAN, Narain Richmond, British Columbia V6X 3C6 (CA) (74) Representative: J A Kemp LLP  80 Turnmill Street London EC1M 5QU London EC1M 5QU (GB)