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EP 4 816 591 A1

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(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24816931.0 (22) Date of filing: 27.11.2024

(51) International Patent Classification (IPC):  C23C 18/16(2006.01) C23C 18/40(2006.01) C23C 18/20(2006.01) (52) Cooperative Patent Classification (CPC): C23C 18/1641; C23C 18/1653; C23C 18/2086; C23C 18/40; C08J 7/123; C08J 7/12 (86) International application number: PCT/EP2024/083758 (87) International publication number: WO 2025/114356 (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: 28.11.2023 SE 2351361 (71) Applicant: Cuptronic Technology Ltd. Limassol 3733 (CY)	(72) Inventors: GÖTHE, Sven 168 50 BROMMA (SE) ATTHOFF, Björn 756 53 UPPSALA (SE) LINDELÖF, Magnus 75267 UPPSALA (SE) (74) Representative: Ström & Gulliksson AB  Box 5275 102 46 Stockholm 102 46 Stockholm (SE)