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(11)

EP 4 496 923 A2

(12)

(88) Date of publication A3: 02.11.2023 (43) Date of publication: 29.01.2025 Bulletin 2025/05 (21) Application number: 23726583.0 (22) Date of filing: 20.03.2023

(51) International Patent Classification (IPC):  D21J 7/00(2006.01) D21H 11/18(2006.01) D21J 3/00(2006.01) (52) Cooperative Patent Classification (CPC): D21J 7/00; D21J 3/00; D21H 11/18 (86) International application number: PCT/IB2023/000157 (87) International publication number: WO 2023/180808 (28.09.2023 Gazette 2023/39)

(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 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 (30) Priority: 21.03.2022 US 202263321917 P (71) Applicant: FiberLean Technologies Limited Par, Cornwall PL24 2SQ (GB)	(72) Inventors: PHIPPS, Jonathan Gorran Haven, Cornwall PL26 6JE (GB) MA, Camery Sheffield South Yorkshire S3 7BGB (GB) KRITZINGER, Johannes 4600 Olten (CH) RULE, Abigail Truro Cornwall TR1 2DL (GB) (74) Representative: Russell, Tim et al Venner Shipley LLP 200 Aldersgate London EC1A 4HD London EC1A 4HD (GB)