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EP 4 251 817 A1

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(43) Date of publication: 04.10.2023 Bulletin 2023/40 (21) Application number: 21898787.3 (22) Date of filing: 24.11.2021

(51) International Patent Classification (IPC):  E04B 1/02(2006.01) E04B 1/64(2006.01) E04B 5/02(2006.01) E04B 7/20(2006.01) E04H 1/00(2006.01) E04B 1/14(2006.01) E04B 1/76(2006.01) E04B 5/48(2006.01) E04C 2/38(2006.01) E04B 1/94(2006.01) (52) Cooperative Patent Classification (CPC): E04B 1/14; E04B 2001/246; E04B 2001/2421; E04C 2/384; E04C 2/26 (86) International application number: PCT/RU2021/000521 (87) International publication number: WO 2022/114995 (02.06.2022 Gazette 2022/22)

(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: 27.11.2020 RU 2020139034 (71) Applicant: RUSAPS Limited Liability Company Moscow, 123308 (RU)

(72) Inventors: SHENDER, Dmitrii Aleksandrovich Moscow, 121467 (RU) SHENDER, Aleksandr Grigorievich Moscow, 121467 (RU) PUGACHEV, Aleksei Vladimirovich Moscow, 121615 (RU) AJZENVARG, Boris Semenovich Moscow, 129090 (RU) BOGACHEVA, Elizaveta Andreevna Moscow, 127276 (RU) SEMENOV, Aleksandr Anatol'evich Moscow, 129345 (RU) DANILKOV, Stanislav Aleksandrovich Moscow, 170019 (RU) (74) Representative: Danubia Patent & Law Office LLC  Bajcsy-Zsilinszky út 16 1051 Budapest 1051 Budapest (HU)