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(11)

EP 4 457 019 A1

(12)

(43) Date of publication: 06.11.2024 Bulletin 2024/45 (21) Application number: 22835861.0 (22) Date of filing: 29.12.2022

(51) International Patent Classification (IPC):  B01J 20/22(2006.01) B01D 15/22(2006.01) B01D 15/38(2006.01) B01J 20/28(2006.01) B01J 39/18(2017.01) B01J 47/026(2017.01) B01D 15/00(2006.01) B01D 15/36(2006.01) B01J 20/26(2006.01) B01J 20/34(2006.01) B01J 41/12(2017.01) C22B 3/42(2006.01) (52) Cooperative Patent Classification (CPC): B01J 20/22; B01J 20/261; B01J 20/262; B01J 20/28026; B01J 20/28045; B01J 20/3475; B01J 41/12; B01J 39/18; B01J 47/026; C22B 3/42; B01J 20/28052; C02F 2101/105; C02F 2101/163; C02F 2101/166; C02F 2101/101; C02F 2101/206; C02F 2101/22; C02F 2303/20; C02F 1/285; C02F 1/42; C02F 2303/16; B01D 15/361 (86) International application number: PCT/FI2022/050875 (87) International publication number: WO 2023/126577 (06.07.2023 Gazette 2023/27)

(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: 30.12.2021 FI 20216370 (71) Applicant: Weeefiner Oy 40500 Jyväskylä (FI)	(72) Inventors: TASKINEN, Jenna 40500 Jyväskylä (FI) LAHTINEN, Elmeri 40500 Jyväskylä (FI) HÄNNINEN, Mikko 40500 Jyväskylä (FI) (74) Representative: Laine IP Oy  Porkkalankatu 24 00180 Helsinki 00180 Helsinki (FI)