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(11)

EP 4 540 453 A1

(12)

(43) Date of publication: 23.04.2025 Bulletin 2025/17 (21) Application number: 23736200.9 (22) Date of filing: 16.06.2023

(51) International Patent Classification (IPC):  D06N 7/00(2006.01) E01C 13/08(2006.01) D01F 6/92(2006.01) (52) Cooperative Patent Classification (CPC): E01C 13/08; E01C 2013/086; D06N 7/0068; D06N 7/0081; D06N 2209/1614; D01F 6/92; D01F 6/94 (86) International application number: PCT/IB2023/056255 (87) International publication number: WO 2023/242813 (21.12.2023 Gazette 2023/51)

(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: 17.06.2022 IT 202200012875 (71) Applicant: Biopolymer Swiss AG 6340 Baar (CH)	(72) Inventors: TRAVAINI, Fabio 6900 Paradiso (CH) TRAVAINI, Lorenzo 22041 Colverde (CO) (IT) MARTINI, Eligio 10024 Moncalieri (TO) (IT) (74) Representative: Fabiano, Piero  Fabiano, Franke & MGT Sagl Piazzetta San Carlo, 2 6900 Lugano 6900 Lugano (CH)