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(11)

EP 4 739 422 A1

(12)

(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24742226.4 (22) Date of filing: 05.07.2024

(51) International Patent Classification (IPC):  B01D 46/04(2006.01) B01D 46/90(2022.01) B01D 46/88(2022.01) (52) Cooperative Patent Classification (CPC): B01D 46/04; B01D 46/90; B01D 2273/14; B01D 46/88 (86) International application number: PCT/EP2024/069138 (87) International publication number: WO 2025/012180 (16.01.2025 Gazette 2025/03)

(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: GE KH MA MD TN (30) Priority: 07.07.2023 EP 23184296 (71) Applicant: Donaldson Company, Inc. Bloomington, MN 55431 (US)	(72) Inventors: BEDFORD, Nigel Joseph Ferndown Dorset BH22 0JN (GB) PEACH, Aaron Stephen Weymouth Dorset DT4 0LY (GB) BUCZAK, David Poole Dorset BH12 4EQ (GB) (74) Representative: Potter Clarkson  Chapel Quarter Mount Street Nottingham NG1 6HQ Nottingham NG1 6HQ (GB)