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EP 4 179 129 A1

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(43) Date of publication: 17.05.2023 Bulletin 2023/20 (21) Application number: 20944976.8 (22) Date of filing: 13.07.2020

(51) International Patent Classification (IPC):  C23G 1/14(2006.01) B08B 3/08(2006.01) C23G 5/00(2006.01) B08B 3/10(2006.01) (52) Cooperative Patent Classification (CPC): C23G 1/00; C23G 1/24 (86) International application number: PCT/RU2020/000345 (87) International publication number: WO 2022/015186 (20.01.2022 Gazette 2022/03)

(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: Angara Global Limited Moscow, 129226 (RU)	(72) Inventors: RODIN, Ilya Yurievich Moscow, 123458 (RU) STAROSTIN, Gennady Sergeevich Moscow, 125414 (RU) (74) Representative: Korenberg, Alexander Tal et al Kilburn & Strode LLP Lacon London 84 Theobalds Road London WC1X 8NL London WC1X 8NL (GB)