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EP 4 469 391 A1

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(43) Date of publication: 04.12.2024 Bulletin 2024/49 (21) Application number: 22716305.2 (22) Date of filing: 21.02.2022

(51) International Patent Classification (IPC):  C01B 3/06(2006.01) C01B 7/03(2006.01) C01F 7/02(2022.01) C01B 3/32(2006.01) C01B 7/09(2006.01) C01F 11/00(2006.01) (52) Cooperative Patent Classification (CPC): C01B 3/32; C01B 7/096; C01B 7/093; C01B 7/03; C01B 3/06 (86) International application number: PCT/BA2022/000001 (87) International publication number: WO 2023/141686 (03.08.2023 Gazette 2023/31)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 28.01.2022 BA 223464 (71) Applicant: COSIC, Drago 74000 Doboj (BA)	(72) Inventor: COSIC, Drago 74000 Doboj (BA) (74) Representative: Golmajer Zima, Marjanca  Patentna pisarna d.o.o. Copova 14 1000 Ljubljana Copova 14 1000 Ljubljana (SI)