(19)

(11)

EP 3 897 919 A1

(12)

(43) Date of publication: 27.10.2021 Bulletin 2021/43 (21) Application number: 19904140.1 (22) Date of filing: 23.12.2019

(51) International Patent Classification (IPC):  B01D 47/06(2006.01) C02F 1/12(2006.01) E21B 41/00(2006.01) B01D 47/14(2006.01) C10L 3/10(2006.01) E21B 43/34(2006.01) (52) Cooperative Patent Classification (CPC): E21B 41/00; C10L 3/10; B01D 47/14; E21B 43/34; B01D 47/06; C02F 1/12 (86) International application number: PCT/US2019/068301 (87) International publication number: WO 2020/139821 (02.07.2020 Gazette 2020/27)

(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: 23.12.2018 US 201862784525 P (71) Applicant: HYDROZONIX, LLC Conroe, TX 77304 (US)	(72) Inventor: PATTON, Mark Conroe, TX 77304 (US) (74) Representative: Abel & Imray  Westpoint Building James Street West Bath BA1 2DA Bath BA1 2DA (GB)