(19)

(11)

EP 4 547 917 A1

(12)

(43) Date of publication: 07.05.2025 Bulletin 2025/19 (21) Application number: 22949614.6 (22) Date of filing: 28.06.2022

(51) International Patent Classification (IPC):  E04F 13/06(2006.01) (52) Cooperative Patent Classification (CPC): E04F 13/06; E04F 2013/063; E04F 13/042 (86) International application number: PCT/US2022/035206 (87) International publication number: WO 2024/005779 (04.01.2024 Gazette 2024/01)

(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: Certain Teed Gypsum, Inc. Malvern, PA 19355 (US)	(72) Inventors: RADFORD, Craig Douglas Lake Tapps, WA 98391 (US) MOLLOY, Thomas C. Kent, WA 98031 (US) (74) Representative: Murgitroyd & Company  165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)