(19)

(11)

EP 4 816 084 A2

(12)

(88) Date of publication A3: 24.07.2025 (43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24809354.4 (22) Date of filing: 20.11.2024

(51) International Patent Classification (IPC):  B01J 20/26(2006.01) B01J 20/30(2006.01) B01J 41/07(2017.01) B01D 53/02(2006.01) B01D 53/14(2006.01) B01J 20/28(2006.01) B01J 20/34(2006.01) B01J 41/14(2006.01) B01D 53/047(2006.01) B01D 53/04(2006.01) (52) Cooperative Patent Classification (CPC): B01J 20/28019; B01J 20/28057; B01J 20/28078; B01J 20/28033; B01J 20/28042; B01J 20/261; B01J 20/267; B01J 20/3085; B01D 53/02; B01J 20/3466; B01D 53/1475; B01D 2258/0283; B01D 2258/05; B01D 2253/202; B01D 53/0462; B01D 53/0476; B01J 20/3425; B01J 20/3483; B01J 20/264; Y02C 20/40 (86) International application number: PCT/EP2024/082949 (87) International publication number: WO 2025/114104 (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: 27.11.2023 EP 23212181 (71) Applicant: Climeworks AG 8152 Glattpark (Opfikon) (CH)	(72) Inventors: YOSHIDA, Tomohide Glattpark (Opfikon) (CH) GROPP, Cornelius Glattpark (Opfikon) (CH) TRAEGER, Hanna Glattpark (Opfikon) (CH) BAETTIG, Julia Glattpark (Opfikon) (CH) (74) Representative: Bremi, Tobias Hans  Isler & Pedrazzini AG Giesshübelstrasse 45 Postfach 1772 8027 Zürich 8027 Zürich (CH)