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(11)

EP 4 824 291 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24820421.6 (22) Date of filing: 05.12.2024

(51) International Patent Classification (IPC):  C14C 1/08(2006.01) C14C 3/28(2006.01) C14C 3/00(2006.01) C14C 15/00(2006.01) (52) Cooperative Patent Classification (CPC): C14C 15/00; C14C 1/08; C14C 3/00; C14C 3/28 (86) International application number: PCT/EP2024/084921 (87) International publication number: WO 2025/125084 (19.06.2025 Gazette 2025/25)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 13.12.2023 IT 202300026547 (71) Applicant: RENBERTECH S.R.L. 36070 Trissino (Vicenza) (IT)	(72) Inventor: BERTOLI, Renato 36072 CHIAMPO (VICENZA) (IT) (74) Representative: Forattini, Amelia  INTERNAZIONALE BREVETTI INGG. ZINI, MARANESI & C. S.R.L. Piazza Castello 1 20121 MILANO 20121 MILANO (IT)