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(11)

EP 4 391 839 A1

(12)

(43) Date of publication: 03.07.2024 Bulletin 2024/27 (21) Application number: 22768913.0 (22) Date of filing: 25.08.2022

(51) International Patent Classification (IPC):  A24B 15/12(2006.01) A24B 15/30(2006.01) A24B 15/14(2006.01) A24B 15/16(2020.01) A24D 1/20(2020.01) (52) Cooperative Patent Classification (CPC): A24B 15/16; A24B 15/12; A24B 15/30; A24D 1/20; A24B 15/14 (86) International application number: PCT/GB2022/052183 (87) International publication number: WO 2023/026048 (02.03.2023 Gazette 2023/09)

(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: 25.08.2021 GB 202112173 (71) Applicant: Nicoventures Trading Limited London WC2R 3LA (GB)	(72) Inventors: PHILLIPS, Jeremy London WC2R 3LA (GB) WHITLEY, Alexander London WC2R 3LA (GB) (74) Representative: Barrow, Nicholas Martin et al Venner Shipley LLP Byron House Cambridge Business Park Cowley Road Cambridge CB4 0WZ Cambridge CB4 0WZ (GB)