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(11)

EP 4 540 474 A1

(12)

(43) Date of publication: 23.04.2025 Bulletin 2025/17 (21) Application number: 23823414.0 (22) Date of filing: 13.06.2023

(51) International Patent Classification (IPC):  E04B 9/06(2006.01) E04B 9/12(2006.01) E04B 9/14(2006.01) E04B 9/10(2006.01) E04B 9/00(2006.01) (52) Cooperative Patent Classification (CPC): E04B 9/14; E04B 9/366; E04B 9/006 (86) International application number: PCT/IN2023/050555 (87) International publication number: WO 2023/242863 (21.12.2023 Gazette 2023/51)

(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: 16.06.2022 IN 202241034620 (71) Applicant: PWDS Extrusions Private Limited Tamil Nadu Coimbatore 641402 (IN)	(72) Inventors: GOVINDARAJU, Paari Nadu Coimbatore 641402 (IN) SHIVAM, S.Eniyan Nadu Coimbatore 641402 (IN) KUMAR, T.Nandha Nadu Coimbatore 641402 (IN) SHANMUGAVEL, V. Nadu Coimbatore 641402 (IN) (74) Representative: Studio Torta S.p.A.  Via Viotti, 9 10121 Torino 10121 Torino (IT)