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(11)

EP 4 396 139 A1

(12)

(43) Date of publication: 10.07.2024 Bulletin 2024/28 (21) Application number: 21956241.0 (22) Date of filing: 02.09.2021

(51) International Patent Classification (IPC):  C02F 5/00(2023.01) (52) Cooperative Patent Classification (CPC): Y02P 10/20; C02F 5/14; C02F 1/008; C02F 2209/008; C02F 2209/006; C02F 2209/001; C02F 2209/003; C02F 2209/02; C02F 2209/05; C02F 2209/06; C02F 2209/055; C02F 2209/07; C02F 2303/22; C02F 2103/023 (86) International application number: PCT/US2021/048843 (87) International publication number: WO 2023/033825 (09.03.2023 Gazette 2023/10)

(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 (71) Applicant: Chemtreat, Inc. Glen Allen, VA 23060 (US)	(72) Inventors: BOUDREAUX, Kevin Glen Allen, Virginia 23060 (US) GONZALEZ, Bill Glen Allen, Virginia 23060 (US) KILLOUGH, Kerry Glen Allen, Virginia 23060 (US) FINNOUCHE, Faycal Glen Allen, Virginia 23060 (US) OSWALD, David Glen Allen, Virginia 23060 (US) (74) Representative: Sandri, Sandro  Bugnion S.P.A. Via Pancaldo 68 37138 Verona 37138 Verona (IT)