(19)

(11)

EP 4 143 379 A1

(12)

(43) Date of publication: 08.03.2023 Bulletin 2023/10 (21) Application number: 20735033.1 (22) Date of filing: 30.04.2020

(51) International Patent Classification (IPC):  D06P 1/00(2006.01) D06P 1/52(2006.01) (52) Cooperative Patent Classification (CPC): D06P 1/5292; D06P 1/0012 (86) International application number: PCT/IT2020/000038 (87) International publication number: WO 2021/220312 (04.11.2021 Gazette 2021/44)

(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 (71) Applicant: Antica Valserchio S.R.L. 55032 Castelnuovo di Garfagnana (LU) (IT)	(72) Inventors: PEREZ AMARO, Lucia Gabriela 51016 Montecatini Terme (PT) (IT) DOMENICHELLI, Arianna 55023 Borgo A Mozzano (LU) (IT) LANDINI, Luca 51016 Montecatini Terme (PT) (IT) SANDIAS, Francesco 51016 Montecatini Terme (PT) (IT) CHIELLINI, Emo 51016 Montecatini Terme (PT) (IT) (74) Representative: Santi, Filippo et al Barzanò & Zanardo Roma S.p.A. Via Piemonte 26 00187 Roma 00187 Roma (IT)