(19)

(11)

EP 4 313 435 A1

(12)

(43) Date of publication: 07.02.2024 Bulletin 2024/06 (21) Application number: 22723466.3 (22) Date of filing: 21.03.2022

(51) International Patent Classification (IPC):  B09B 3/40(2022.01) C04B 28/04(2006.01) B09B 101/30(2022.01) C04B 18/10(2006.01) C04B 111/70(2006.01) (52) Cooperative Patent Classification (CPC): C04B 18/10; C04B 18/101; C04B 28/04; C04B 2111/70; B09B 2101/30; B09B 3/40   C-Sets: C04B 18/10, C04B 20/023; C04B 28/04, C04B 18/101; (86) International application number: PCT/GB2022/000033 (87) International publication number: WO 2022/200753 (29.09.2022 Gazette 2022/39)

(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: 22.03.2021 GB 202103945 (71) Applicant: Innovative Ash Solutions Limited Lanark ML11 8EP (GB)	(72) Inventors: GREEN, Robert Craig Charlestown Fife KY11 3ET (GB) CUNNINGHAM, Colin Edinburgh EH6 5BU (GB) (74) Representative: Gordon, Naoise Padhraic Edward  Black & Associates Limited Office 2/1211 Dumbarton RoadGlasgow G11 6AA Office 2/1211 Dumbarton RoadGlasgow G11 6AA (GB)