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(11)

EP 4 771 263 A1

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(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24765317.3 (22) Date of filing: 22.08.2024

(51) International Patent Classification (IPC):  F02C 3/22(2006.01) F02C 6/06(2006.01) F02C 7/224(2006.01) C01B 3/04(2026.01) F02C 6/18(2006.01) H01M 8/04111(2016.01) (52) Cooperative Patent Classification (CPC): F02C 3/22; F02C 7/224; F05D 2240/36; F05D 2270/082; C01B 3/047; H01M 2250/407; F02C 6/06; F02C 6/18; H01M 8/1231; H01M 8/04201; H01M 8/0606; H01M 8/04007 (86) International application number: PCT/EP2024/025251 (87) International publication number: WO 2025/045388 (06.03.2025 Gazette 2025/10)

(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: GE KH MA MD TN (30) Priority: 28.08.2023 IT 202300017637 (71) Applicant: NUOVO PIGNONE TECNOLOGIE - S.R.L. 50127 Florence (IT)	(72) Inventors: GHEZZI, Sergio 50127 Florence, Firenze (IT) SARTI, Giovanni 50127 Florence, Firenze (IT) ROMANO, Christian 50127 Florence, Firenze (IT) (74) Representative: Illingworth-Law, William Illingworth et al Baker Hughes 245 Hammersmith Chalk Hill Road London W6 8DW London W6 8DW (GB)