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EP 4 573 046 A2

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(88) Date of publication A3: 18.04.2024 (43) Date of publication: 25.06.2025 Bulletin 2025/26 (21) Application number: 23855450.5 (22) Date of filing: 17.08.2023

(51) International Patent Classification (IPC):  C01B 32/20(2017.01) C08L 97/02(2006.01) C08H 8/00(2010.01) (52) Cooperative Patent Classification (CPC): C01B 32/205; C10B 55/00; C10B 53/02; C10B 57/04; C10B 57/005; C01P 2002/60; C01P 2002/78; H01M 4/587; H01M 10/0525; H01M 10/0567; Y02E 60/10 (86) International application number: PCT/US2023/030445 (87) International publication number: WO 2024/039765 (22.02.2024 Gazette 2024/08)

(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: KH MA MD TN (30) Priority: 18.08.2022 US 202263399047 P (71) Applicant: Birla Carbon U.S.A., Inc. Marietta, GA 30062-2253 (US)	(72) Inventors: REGULA, Michael, J. Marietta, GA 30062 (US) COMBS, Zachary, A. Marietta, GA 30062 (US) (74) Representative: Dehns  10 Old Bailey London EC4M 7NG London EC4M 7NG (GB)