(19)

(11)

EP 4 274 672 A1

(12)

(43) Date of publication: 15.11.2023 Bulletin 2023/46 (21) Application number: 22737162.2 (22) Date of filing: 07.01.2022

(51) International Patent Classification (IPC):  B01D 61/02(2006.01) B01D 61/14(2006.01) B01D 61/04(2006.01) (52) Cooperative Patent Classification (CPC): B01D 61/025; B01D 61/027; B01D 61/12; B01D 65/02; B01D 2311/24; C02F 1/441 (86) International application number: PCT/US2022/011580 (87) International publication number: WO 2022/150567 (14.07.2022 Gazette 2022/28)

(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: 08.01.2021 US 202163199557 P (71) Applicant: CTX, LLC Billerica, MA 01821 (US)	(72) Inventor: SMITH, Stanton Russel Waltham, Massachusetts 02452 (US) (74) Representative: Barker Brettell LLP  100 Hagley Road Edgbaston Birmingham B16 8QQ Birmingham B16 8QQ (GB)