(19)

(11)

EP 4 298 286 A1

(12)

(43) Date of publication: 03.01.2024 Bulletin 2024/01 (21) Application number: 22708917.4 (22) Date of filing: 25.02.2022

(51) International Patent Classification (IPC):  E03C 1/10(2006.01) E03D 3/10(2006.01) E03D 3/00(2006.01) E03D 5/01(2006.01) (52) Cooperative Patent Classification (CPC): E03D 3/00; E03D 3/10; E03D 5/01; E03C 1/102 (86) International application number: PCT/EP2022/054859 (87) International publication number: WO 2022/180238 (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 (30) Priority: 25.02.2021 ES 202130158 10.11.2021 ES 202131047 (71) Applicant: Roca Sanitario, S. A. 08029 Barcelona (ES)	(72) Inventor: MUNAR SAURA, Miguel Angel 08029 Barcelona (ES) (74) Representative: Ponti & Partners, S.L.P  Edifici PRISMA Av. Diagonal núm. 611-613, Planta 2 08028 Barcelona 08028 Barcelona (ES)