(19)

(11)

EP 4 121 189 A1

(12)

(43) Date of publication: 25.01.2023 Bulletin 2023/04 (21) Application number: 20925933.2 (22) Date of filing: 27.05.2020

(51) International Patent Classification (IPC):  B01D 37/04(2006.01) B01D 61/12(2006.01) B01D 61/02(2006.01) C02F 1/00(2006.01) (52) Cooperative Patent Classification (CPC): B01D 61/12; C02F 1/441; C02F 1/442; C02F 2303/22; C02F 1/008; C02F 2209/006; B01D 2311/14; B01D 2311/16; B01D 65/08; B01D 2315/14 (86) International application number: PCT/US2020/034674 (87) International publication number: WO 2021/188132 (23.09.2021 Gazette 2021/38)

(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: 18.03.2020 US 202062991393 P (71) Applicant: Crosstek Membrane Technology Billerica, MA 01821 (US)	(72) Inventor: SMITH, Stanton Russel Waltham, Massachusetts 02452 (US) (74) Representative: Barker Brettell LLP  100 Hagley Road Edgbaston Birmingham, West Midlands B16 8QQ Birmingham, West Midlands B16 8QQ (GB)