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EP 4 499 588 A1

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(43) Date of publication: 05.02.2025 Bulletin 2025/06 (21) Application number: 23719889.0 (22) Date of filing: 29.03.2023

(51) International Patent Classification (IPC):  C04B 35/47(2006.01) C04B 41/45(2006.01) C04B 35/628(2006.01) B01J 21/06(2006.01) B01J 37/02(2006.01) C04B 111/20(2006.01) C04B 41/00(2006.01) C04B 41/87(2006.01) C04B 35/468(2006.01) B01J 35/00(2024.01) C04B 111/00(2006.01) (52) Cooperative Patent Classification (CPC): C04B 41/009; C04B 41/4539; C04B 41/87; C04B 2111/00827; C04B 2111/2061; C04B 35/468; C04B 35/47; C04B 35/62842; C04B 35/62805; C04B 35/62818; C04B 35/62892; C04B 35/62886; C04B 2235/5445; C04B 2235/5454; C04B 2235/407; C04B 2235/408; C04B 2235/404; C04B 2235/3293; C04B 2235/3284; C04B 2235/3258; B01J 21/063; B01J 23/005; B01J 23/02; B01J 23/50; B01J 37/033; B01J 37/08; B01J 37/088; B01J 37/0201; B01J 35/19; B01J 35/39   C-Sets: C04B 41/009, C04B 33/00; C04B 41/4539, C04B 41/4547, C04B 41/5041; (86) International application number: PCT/IB2023/053120 (87) International publication number: WO 2023/187668 (05.10.2023 Gazette 2023/40)

(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: KH MA MD TN (30) Priority: 29.03.2022 IT 202200006182 (71) Applicant: Granitifiandre S.p.A. 42014 Castellarano (IT)	(72) Inventors: MINOZZI, Federica 42014 Castellarano (RE) (IT) BIANCHI, Claudia Letizia Maddalena 42014 Castellarano (RE) (IT) PELLINI, Roberto 42014 Castellarano (RE) (IT) CAPUCCI, Valentino 42014 Castellarano (RE) (IT) (74) Representative: Studio Torta S.p.A.  Via Viotti, 9 10121 Torino 10121 Torino (IT)