(19)

(11)

EP 4 222 300 A1

(12)

(43) Date of publication: 09.08.2023 Bulletin 2023/32 (21) Application number: 21778020.4 (22) Date of filing: 16.09.2021

(51) International Patent Classification (IPC):  D04B 9/40(2006.01) D04B 15/02(2006.01) (52) Cooperative Patent Classification (CPC): D04B 9/40; D04B 15/02 (86) International application number: PCT/EP2021/075420 (87) International publication number: WO 2022/069235 (07.04.2022 Gazette 2022/14)

(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: 01.10.2020 IT 202000023137 (71) Applicant: Lonati S.p.A. 25124 Brescia (IT)	(72) Inventors: LONATI, Ettore 25082 BOTTICINO (IT) LONATI, Fausto 25123 BRESCIA (IT) LONATI, Francesco 25010 SAN FELICE DEL BENACO (IT) (74) Representative: Modiano, Micaela Nadia et al Modiano & Partners Via Meravigli, 16 20123 Milano 20123 Milano (IT)