(19)

(11)

EP 4 308 342 A1

(12)

(43) Date of publication: 24.01.2024 Bulletin 2024/04 (21) Application number: 22770681.9 (22) Date of filing: 18.03.2022

(51) International Patent Classification (IPC):  B23Q 11/10(2006.01) A61L 2/10(2006.01) B01D 37/04(2006.01) C02F 1/32(2023.01) (52) Cooperative Patent Classification (CPC): C02F 1/32; A61L 2/10; B23Q 11/1069 (86) International application number: PCT/FI2022/050175 (87) International publication number: WO 2022/195172 (22.09.2022 Gazette 2022/38)

(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: 19.03.2021 FI 20215304 (71) Applicant: Spesnes Oy 01840 Klaukkala (FI)	(72) Inventor: HEIKKINEN, Joonas 00390 Helsinki (FI) (74) Representative: Salomäki, Juha Kari Ensio  Salomaki Oy Kankurinkatu 4-6 05800 Hyvinkää 05800 Hyvinkää (FI)