(19)

(11)

EP 3 969 141 A1

(12)

(43) Date of publication: 23.03.2022 Bulletin 2022/12 (21) Application number: 20728325.0 (22) Date of filing: 06.05.2020

(51) International Patent Classification (IPC):  B01D 8/00(2006.01) B01D 53/14(2006.01) C25B 1/04(2021.01) C02F 1/04(2006.01) B01D 5/00(2006.01) B01D 53/22(2006.01) B01D 53/00(2006.01) C02F 1/44(2006.01) (52) Cooperative Patent Classification (CPC): B01D 8/00; B01D 5/0069; C25B 1/04; C02F 9/00; C02F 1/448; C02F 1/22; C02F 1/461; C02F 2201/001; B01D 69/02; B01D 61/362; B01D 2311/04; B01D 2311/06; B01D 2325/42; B01D 2251/506; B01D 53/229; B01D 2257/302; B01D 2257/304; Y02E 60/36 (86) International application number: PCT/US2020/031614 (87) International publication number: WO 2020/231694 (19.11.2020 Gazette 2020/47)

(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: 13.05.2019 US 201916410198 (71) Applicant: Paragon Space Development Corporation Tucson, AZ 85714 (US)	(72) Inventors: FINGER, Barry Wynns Tucson, Arizona 85714 (US) KELSEY, Laura Katrina Tucson, Arizona 85714 (US) BOWER, Chad E. Tucson, Arizona 85714 (US) (74) Representative: Haseltine Lake Kempner LLP  Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)