(19)

(11)

EP 4 739 626 A1

(12)

(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24740235.7 (22) Date of filing: 05.07.2024

(51) International Patent Classification (IPC):  C01B 32/19(2017.01) C25F 5/00(2006.01) C01B 32/194(2017.01) H01L 21/02(2006.01) (52) Cooperative Patent Classification (CPC): C01B 32/19; C01B 32/194; H10P 90/00; H10P 72/74; H10P 72/7434; H10P 72/744; H10P 90/22 (86) International application number: PCT/NL2024/050373 (87) International publication number: WO 2025/014364 (16.01.2025 Gazette 2025/03)

(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: 07.07.2023 NL 2035299 (71) Applicant: Black Semiconductor Netherlands B.V. 2718 RP Zoetermeer (NL)	(72) Inventors: VAN RIJN, Richard 2718 RP Zoetermeer (NL) BARNES, Matthew David 2718 RP Zoetermeer (NL) BUSCEMA, Michele 2718 RP Zoetermeer (NL) WEHENKEL, Dominique Joseph 2718 RP Zoetermeer (NL) SOFRONIEV, Rosen 2718 RP Zoetermeer (NL) (74) Representative: Nederlandsch Octrooibureau  P.O. Box 29720 2502 LS The Hague 2502 LS The Hague (NL)