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EP 4 771 345 A1

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(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 23765216.9 (22) Date of filing: 01.09.2023

(51) International Patent Classification (IPC):  G01F 23/00(2022.01) G01F 23/26(2022.01) G01F 23/284(2006.01) G01F 23/292(2006.01) G01F 23/80(2022.01) G01F 23/24(2006.01) G01F 23/263(2022.01) G01F 23/288(2006.01) G01F 23/296(2022.01) (52) Cooperative Patent Classification (CPC): G01F 23/0007; G01F 23/242; G01F 23/248; G01F 23/261; G01F 23/265; G01F 23/2845; G01F 23/2885; G01F 23/2921; G01F 23/2961; G01F 23/802 (86) International application number: PCT/EP2023/074017 (87) International publication number: WO 2025/045375 (06.03.2025 Gazette 2025/10)

(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: KH MA MD TN (71) Applicant: ESSITY HYGIENE AND HEALTH AKTIEBOLAG 405 03 Göteborg (SE)	(72) Inventors: DANIELSSON, Gustav 405 03 Göteborg (SE) HIMMELMANN, Gunilla 405 03 Göteborg (SE) WALHEIM, Karl 781 73 Borlänge (SE) OLSSON, Joel 781 73 Borlänge (SE) (74) Representative: Hoffmann Eitle  Patent- und Rechtsanwälte PartmbB Arabellastraße 30 81925 München 81925 München (DE)