(19)

(11)

EP 4 366 558 A1

(12)

(43) Date of publication: 15.05.2024 Bulletin 2024/20 (21) Application number: 22738487.2 (22) Date of filing: 07.07.2022

(51) International Patent Classification (IPC):  A24B 15/14(2006.01) A24B 15/28(2006.01) A24D 1/20(2020.01) A24B 15/16(2020.01) A24B 15/42(2006.01) (52) Cooperative Patent Classification (CPC): A24B 15/14; A24B 15/16; A24B 15/28; A24B 15/42; A24D 1/20 (86) International application number: PCT/EP2022/068945 (87) International publication number: WO 2023/280994 (12.01.2023 Gazette 2023/02)

(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: 07.07.2021 EP 21184365 13.06.2022 EP 22178767 (71) Applicant: Philip Morris Products S.A. 2000 Neuchâtel (CH)

(72) Inventors: FEDELI, Francesco 2000 Neuchâtel (CH) WAIRIMU, Esther 2000 Neuchâtel (CH) HUANG, Houxue 2000 Neuchâtel (CH) AJITHKUMAR, Anu 2000 Neuchâtel (CH) DUPASQUIER, Yan 2000 Neuchâtel (CH) VAN DEN BOOGAART, Marc Antonius Friedrich 2000 Neuchâtel (CH) (74) Representative: Maxwell-Keys, Alex Joe  Reddie & Grose LLP The White Chapel Building 10 Whitechapel High Street London, Greater London E1 8QS London, Greater London E1 8QS (GB)