(19)

(11)

EP 4 320 088 A1

(12)

(43) Date of publication: 14.02.2024 Bulletin 2024/07 (21) Application number: 22721903.7 (22) Date of filing: 08.04.2022

(51) International Patent Classification (IPC):  C04B 35/626(2006.01) C04B 33/13(2006.01) B02C 21/00(2006.01) (52) Cooperative Patent Classification (CPC): C04B 35/6261; C04B 35/6263; C04B 35/62695; C04B 33/13; C04B 35/62655 (86) International application number: PCT/IT2022/050090 (87) International publication number: WO 2022/215101 (13.10.2022 Gazette 2022/41)

(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: 08.04.2021 IT 202100008858 (71) Applicant: Balelli, Aldo Tomaso 48018 Faenza (RA) (IT)	(72) Inventor: Balelli, Aldo Tomaso 48018 Faenza (RA) (IT) (74) Representative: Manzella & Associati  Via dell'Indipendenza, 13 40121 Bologna 40121 Bologna (IT)