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(11)

EP 4 298 270 A1

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(43) Date of publication: 03.01.2024 Bulletin 2024/01 (21) Application number: 21716861.6 (22) Date of filing: 23.02.2021

(51) International Patent Classification (IPC):  C25D 3/56(2006.01) C25D 7/00(2006.01) C25D 3/58(2006.01) C22C 5/02(2006.01) C25D 3/62(2006.01) C25D 1/02(2006.01) (52) Cooperative Patent Classification (CPC): C25D 7/005; C22C 5/02; C25D 3/62; C25D 3/58; C25D 1/02 (86) International application number: PCT/IT2021/000006 (87) International publication number: WO 2022/180650 (01.09.2022 Gazette 2022/35)

(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: Italfimet Srl 52048 Monte San Savino (IT)	(72) Inventor: CAPACCIOLI, Luca 52019 LATERINA PERGINE VALDARNO (IT) (74) Representative: Modiano, Micaela Nadia et al Modiano & Partners Via Meravigli, 16 20123 Milano 20123 Milano (IT)