(19)

(11)

EP 3 765 658 A1

(12)

(43) Date of publication: 20.01.2021 Bulletin 2021/03 (21) Application number: 19709513.6 (22) Date of filing: 13.03.2019

(51) International Patent Classification (IPC):  C25D 7/00(2006.01) C25D 3/56(2006.01) C25D 5/10(2006.01) C25D 3/54(2006.01) C25D 3/62(2006.01) (86) International application number: PCT/EP2019/056328 (87) International publication number: WO 2019/175270 (19.09.2019 Gazette 2019/38)

(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: 13.03.2018 EP 18161575 (71) Applicant: COVENTYA S.p.A. 22060 Carugo (CO) (IT)	(72) Inventors: NELIAS, Coline 51100 Pistoia (IT) DUPRAT, Jean-Jacques 33510 Andernos-les-bains (FR) (74) Representative: Pfenning, Meinig & Partner mbB  Patent- und Rechtsanwälte Theresienhöhe 11a 80339 München 80339 München (DE)