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(11)

EP 4 189 143 A2

(12)

(88) Date of publication A3: 21.04.2022 (43) Date of publication: 07.06.2023 Bulletin 2023/23 (21) Application number: 21759479.5 (22) Date of filing: 03.08.2021

(51) International Patent Classification (IPC):  C25B 9/23(2021.01) C25B 1/34(2006.01) C08G 64/00(2006.01) C25B 1/23(2021.01) C07C 1/04(2006.01) (52) Cooperative Patent Classification (CPC): C25B 9/23; C25B 1/23; C25B 1/34; C08G 64/24; B01D 53/62; B01D 2258/06; B01D 2257/504; B01D 53/73; B01D 53/96; B01D 53/326; B01D 53/8671; B01D 53/02; Y02C 20/40; Y02P 20/151 (86) International application number: PCT/US2021/044378 (87) International publication number: WO 2022/031726 (10.02.2022 Gazette 2022/06)

(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: 03.08.2020 US 202063060583 P (71) Applicant: Twelve Benefit Corporation Berkeley, California 94710 (US)

(72) Inventors: FLANDERS, Nicholas H. Berkeley, California 94710 (US) KUHL, Kendra P. Berkeley, California 94710 (US) CAVE, Etosha R. Berkeley, California 94710 (US) MA, Sichao Berkeley, California 94710 (US) HUO, Ziyang Berkeley, California 94710 (US) HAINES, Carter S. Berkeley, California 94710 (US) BEKKEDAHL, Timothy A. Berkeley, California 94710 (US) CORP, Kathryn L. Berkeley, California 94710 (US) MISHRA, Ashley D. Berkeley, California 94710 (US) IZETT, Edward Berkeley, California 94710 (US) (74) Representative: Lewis Silkin LLP  5 Chancery Lane Clifford's Inn London EC4A 1BL London EC4A 1BL (GB)