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EP 4 816 757 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24846751.6 (22) Date of filing: 26.11.2024

(51) International Patent Classification (IPC):  F27B 17/00(2006.01) C23C 8/24(2006.01) C23C 8/06(2006.01) F27D 7/06(2006.01) (52) Cooperative Patent Classification (CPC): C23C 8/24; F27B 17/0016; F27D 7/06; C23C 8/30 (86) International application number: PCT/PL2024/050095 (87) International publication number: WO 2025/116759 (05.06.2025 Gazette 2025/23)

(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: 30.11.2023 PL 44692923 (71) Applicant: Seco/Warwick S.A. 66-200 Swiebodzin (PL)	(72) Inventors: KORECKI, Maciej 66-218 Wiebodzin (PL) LIPKO, Damian 65-213 Zielona Góra (PL) BRONISZ, Piotr 66-200 Wiebodzin (PL) MILISZEWSKI, Andrzej 66-200 Wiebodzin (PL) FUJAK, Wieslaw 66-210 Zbaszynek (PL) (74) Representative: Gornicki, Pawel  Biuro Ochrony Wlasnosci Intelektualnej Patent-Service ul. Rybojadzka 16 60-443 Poznan 60-443 Poznan (PL)