(19)

(11)

EP 4 243 956 A1

(12)

(43) Date of publication: 20.09.2023 Bulletin 2023/38 (21) Application number: 21820692.8 (22) Date of filing: 12.11.2021

(51) International Patent Classification (IPC):  B01D 39/08(2006.01) A62B 23/02(2006.01) B63J 2/02(2006.01) A41D 13/11(2006.01) B01D 39/16(2006.01) B60H 1/00(2006.01) (52) Cooperative Patent Classification (CPC): A62B 23/025; B01D 39/083; B01D 39/1615; B01D 2239/0414; B01D 39/1623; B60H 3/0608 (86) International application number: PCT/IB2021/060487 (87) International publication number: WO 2022/101836 (19.05.2022 Gazette 2022/20)

(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: 12.11.2020 IT 202000027077 (71) Applicants: Di Berardino, Luigi 23823 Colico (LC) (IT) Brenna, Oreste Vittore 20132 Milano (MI) (IT)	(72) Inventors: Di Berardino, Luigi 23823 Colico (LC) (IT) Brenna, Oreste Vittore 20132 Milano (MI) (IT) (74) Representative: Bianchetti & Minoja with Trevisan & Cuonzo IPS SRL  Via Plinio, 63 20129 Milano 20129 Milano (IT)