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EP 4 003 918 A1

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(43) Date of publication: 01.06.2022 Bulletin 2022/22 (21) Application number: 20746705.1 (22) Date of filing: 09.07.2020

(51) International Patent Classification (IPC):  C02F 1/00(2006.01) C02F 1/28(2006.01) C02F 101/20(2006.01) B01D 27/02(2006.01) C02F 1/42(2006.01) (52) Cooperative Patent Classification (CPC): C02F 1/003; C02F 1/283; C02F 1/42; C02F 2307/04; C02F 2101/20; C02F 1/281; C02F 1/288; C02F 2001/425; C02F 2303/22; C02F 2201/006 (86) International application number: PCT/IB2020/056449 (87) International publication number: WO 2021/014259 (28.01.2021 Gazette 2021/04)

(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: 25.07.2019 RU 2019123491 (71) Applicant: Bwt Barrier Rus Jsc Moscow, 115432 (RU)	(72) Inventors: MASLYUKOV, Alexander Moscow, 117418 (RU) SAPRYKIN, Viktor Moscow, 123182 (RU) MASLYUKOV, Vladimir Moscow, 117630 (RU) BREKHOVA, Anna Moscow, 125581 (RU) PODOBEDOV, Roman Moscow, 141302 (RU) JOHANN, Juergen 5310 Tiefgraben (AT) (74) Representative: Friderichs, Gunther  Augspurger Tesch Friderichs Patent- und Rechtsanwälte PartG mbB Kaiserstraße 39 55116 Mainz 55116 Mainz (DE)