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(11)

EP 4 172 371 A1

(12)

(43) Date of publication: 03.05.2023 Bulletin 2023/18 (21) Application number: 21734944.8 (22) Date of filing: 21.06.2021

(51) International Patent Classification (IPC):  C14B 17/00(2006.01) C14B 1/00(2006.01) C14B 17/04(2006.01) C14B 17/06(2006.01) C14B 1/34(2006.01) (52) Cooperative Patent Classification (CPC): C14B 17/06; C14B 1/00; C14B 17/005 (86) International application number: PCT/IB2021/055448 (87) International publication number: WO 2022/003475 (06.01.2022 Gazette 2022/01)

(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: 29.06.2020 IT 202000015643 (71) Applicant: WEGA S.R.L. 36071 Arzignano (VI) (IT)	(72) Inventors: POVOLERI, Giangiorgio 36071 Arzignano (VI) (IT) TREVISAN, Andrea 36070 Trissino (VI) (IT) (74) Representative: Ziliotto, Tiziano  Studio Ziliotto Contrada Porta Santa Lucia, 48 36100 Vicenza 36100 Vicenza (IT)