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(11)

EP 4 544 151 A1

(12)

(43) Date of publication: 30.04.2025 Bulletin 2025/18 (21) Application number: 23827588.7 (22) Date of filing: 20.06.2023

(51) International Patent Classification (IPC):  E21D 21/00(2006.01) B29C 70/52(2006.01) B32B 5/28(2006.01) E04C 5/07(2006.01) B29C 53/58(2006.01) B32B 5/12(2006.01) C08K 7/04(2006.01) (52) Cooperative Patent Classification (CPC): B32B 5/12; E04C 5/07; C08J 5/10; C08J 5/043; C08J 5/0405; B32B 5/26; B32B 1/08; B32B 2597/00; B32B 5/08; B32B 2262/10; B32B 2262/101; B32B 2262/14; B32B 2260/048; B32B 2260/023; B29C 70/30; B29C 70/521; C08J 2363/00; E21D 21/0006 (86) International application number: PCT/NO2023/050146 (87) International publication number: WO 2023/249495 (28.12.2023 Gazette 2023/52)

(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: 21.06.2022 NO 20220711 (71) Applicant: Oldroyd Cheetham, John 3924 Porsgrunn (NO)	(72) Inventor: OLDROYD CHEETHAM, John 3924 PORSGRUNN (NO) (74) Representative: Acapo AS  Edvard Griegs vei 1 5059 Bergen 5059 Bergen (NO)