(19)

(11)

EP 3 661 626 A1

(12)

(43) Date of publication: 10.06.2020 Bulletin 2020/24 (21) Application number: 18759176.3 (22) Date of filing: 01.08.2018

(51) International Patent Classification (IPC):  B01D 53/14(2006.01) B01D 53/18(2006.01) B01D 53/76(2006.01) B01D 47/06(2006.01) B01D 53/72(2006.01) (86) International application number: PCT/IB2018/055768 (87) International publication number: WO 2019/025991 (07.02.2019 Gazette 2019/06)

(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: 04.08.2017 IT 201700090652 (71) Applicants: Onofri, Mauro 40010 Bentivoglio (Bologna) (IT) Meogrossi, Nino 40018 San Pietro in Casale (Bologna) (IT)	(72) Inventor: MEOGROSSI, Nino 40018 San Pietro in Casale (Bologna) (IT) (74) Representative: Casadei, Barbara  Bugnion S.p.A. Via di Corticella, 87 40128 Bologna 40128 Bologna (IT)