(19)

(11)

EP 4 195 973 A1

(12)

(43) Date of publication: 21.06.2023 Bulletin 2023/25 (21) Application number: 21763153.0 (22) Date of filing: 09.08.2021

(51) International Patent Classification (IPC):  A44C 5/20(2006.01) (52) Cooperative Patent Classification (CPC): A44C 5/2071 (86) International application number: PCT/IT2021/050253 (87) International publication number: WO 2022/034622 (17.02.2022 Gazette 2022/07)

(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: 14.08.2020 IT 202000020152 (71) Applicant: Chrysos S.p.A. 36060 Romano d'Ezzelino (IT)	(72) Inventor: BERNARDI, Francesco 36060 ROMANO D'EZZELINO VI (IT) (74) Representative: De Filippis, Sara et al Barzanò & Zanardo Roma S.p.A. Via Piemonte 26 00187 Roma 00187 Roma (IT)