(19)

(11)

EP 4 351 811 A1

(12)

(43) Date of publication: 17.04.2024 Bulletin 2024/16 (21) Application number: 22730972.1 (22) Date of filing: 18.05.2022

(51) International Patent Classification (IPC):  B09B 1/00(2006.01) C12M 1/107(2006.01) B09C 1/00(2006.01) B09B 5/00(2006.01) F17D 1/02(2006.01) (52) Cooperative Patent Classification (CPC): B09B 1/006; B09B 5/00; B09C 1/005; C12M 23/36; C12M 21/04; Y02E 50/30 (86) International application number: PCT/IB2022/054606 (87) International publication number: WO 2022/259064 (15.12.2022 Gazette 2022/50)

(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: 10.06.2021 IT 202100015212 (71) Applicant: ZERO3 S.R.L. 40037 Sasso Marconi (BO) (IT)	(72) Inventors: ANTONINI, Marco 48018 Faenza RA (IT) SANDRINI, Francesca 48018 Faenza RA (IT) (74) Representative: Perani & Partners S.p.A.  Piazza Armando Diaz, 7 20123 Milano 20123 Milano (IT)