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(11)

EP 4 496 878 A1

(12)

(43) Date of publication: 29.01.2025 Bulletin 2025/05 (21) Application number: 23716925.5 (22) Date of filing: 15.03.2023

(51) International Patent Classification (IPC):  C12M 1/00(2006.01) G02B 21/24(2006.01) G02B 21/36(2006.01) G01N 33/48(2006.01) (52) Cooperative Patent Classification (CPC): G02B 21/24; G02B 21/367 (86) International application number: PCT/IB2023/052508 (87) International publication number: WO 2023/180874 (28.09.2023 Gazette 2023/39)

(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: 22.03.2022 IT 202200005657 (71) Applicant: Copan Italia S.P.A. 25125 Brescia (IT)	(72) Inventors: DABELLANI, Davide 25125 Brescia (IT) GRETTER, Stefano 25125 Brescia (IT) MAZZOLARI, Andrea 25125 Brescia (IT) (74) Representative: PGA S.p.A., Milano, Succursale di Lugano  Via Castagnola, 21c 6900 Lugano 6900 Lugano (CH)