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(11)

EP 4 490 121 A1

(12)

(43) Date of publication: 15.01.2025 Bulletin 2025/03 (21) Application number: 23712164.5 (22) Date of filing: 07.03.2023

(51) International Patent Classification (IPC):  C04B 28/02(2006.01) C04B 40/00(2006.01) (52) Cooperative Patent Classification (CPC): C04B 40/0039; C04B 28/02   C-Sets: C04B 40/0039, C04B 14/022, C04B 14/06, C04B 14/106, C04B 14/28, C04B 24/003, C04B 24/18, C04B 24/20, C04B 24/223, C04B 24/2641, C04B 24/2647; C04B 28/02, C04B 14/022, C04B 14/06, C04B 14/106, C04B 14/28, C04B 20/0076, C04B 24/003, C04B 24/18, C04B 24/20, C04B 24/223, C04B 24/2641, C04B 24/2647; (86) International application number: PCT/EP2023/055703 (87) International publication number: WO 2023/170041 (14.09.2023 Gazette 2023/37)

(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: 11.03.2022 EP 22161590 (71) Applicant: Broggi, Giovanni 20121 Milano (IT)	(72) Inventor: Broggi, Giovanni 20121 Milano (IT) (74) Representative: Cattaneo, Elisabetta  Notarbartolo & Gervasi S.p.A. Viale Achille Papa, 30 20149 Milano 20149 Milano (IT)