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EP 4 486 957 A2

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(88) Date of publication A3: 19.10.2023 (43) Date of publication: 08.01.2025 Bulletin 2025/02 (21) Application number: 23764196.4 (22) Date of filing: 03.03.2023

(51) International Patent Classification (IPC):  E03C 1/00(2006.01) E03C 1/06(2006.01) E03C 1/02(2006.01) E03C 1/04(2006.01) E03C 1/18(2006.01) (52) Cooperative Patent Classification (CPC): E03C 1/0404; E03C 2001/0414; E03C 2001/0415 (86) International application number: PCT/US2023/063727 (87) International publication number: WO 2023/168440 (07.09.2023 Gazette 2023/36)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 04.03.2022 WO PCT/CN2022/079313 (71) Applicant: AS America, Inc. Piscataway, NJ 08845 (US)	(72) Inventors: YE, Xiaojing Edison, New Jersey 08820 (US) ZHANG, Weijian Piscataway, New Jersey 08854 (US) WILLIAMS, Emilie New York, New York 10011 (US) (74) Representative: Altmann Stößel Dick Patentanwälte PartG mbB  Theodor-Heuss-Anlage 2 68165 Mannheim 68165 Mannheim (DE)