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(11)

EP 4 313 181 A1

(12)

(43) Date of publication: 07.02.2024 Bulletin 2024/06 (21) Application number: 22781730.1 (22) Date of filing: 27.03.2022

(51) International Patent Classification (IPC):  A61L 9/16(2006.01) F24F 3/16(2021.01) B60H 1/34(2006.01) A61L 9/20(2006.01) B01D 53/86(2006.01) B60H 3/06(2006.01) (52) Cooperative Patent Classification (CPC): B01D 2257/70; B01D 2257/91; B01D 2257/90; B01D 2259/804; B01D 2258/06; B01D 2259/4566; B01D 2257/502; B01D 2257/404; B01D 2257/7027; B01D 53/885; B01D 2255/20707; B01D 2257/504; F24F 8/22; F24F 8/108; F24F 8/99; B60H 3/0608; B60H 3/0078; B60H 3/0071; B60H 1/00371; A61L 9/205; A61L 2209/14; A61L 2209/111 (86) International application number: PCT/PL2022/050018 (87) International publication number: WO 2022/211650 (06.10.2022 Gazette 2022/40)

(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: 31.03.2021 PL 43747121 (71) Applicant: Exel Air Tech Sp. z o.o. 05-830 Kajetany (PL)	(72) Inventors: MIELCZAREK, Adam 00-950 Warszawa (PL) VOLFS, Ruslans 1010 Ryga (LV) (74) Representative: Grzelak, Anna  Sigeon IP, sp z o. o. ul. Bukowinska 24A m. 65 02-703 Warszawa 02-703 Warszawa (PL)