(19)

(11)

EP 4 490 367 A2

(12)

(88) Date of publication A3: 16.11.2023 (43) Date of publication: 15.01.2025 Bulletin 2025/03 (21) Application number: 23767750.5 (22) Date of filing: 10.03.2023

(51) International Patent Classification (IPC):  E04F 21/08(2006.01) E04B 1/76(2006.01) E04B 1/74(2006.01) E04D 13/16(2006.01) E04F 21/06(2006.01) E04F 21/02(2006.01) E04G 21/00(2006.01) E04B 2/10(2006.01) (52) Cooperative Patent Classification (CPC): E04B 1/7604; E04F 21/085 (86) International application number: PCT/US2023/064157 (87) International publication number: WO 2023/173099 (14.09.2023 Gazette 2023/37)

(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: 11.03.2022 US 202263269176 P (71) Applicant: Knauf Insulation, Inc. Shelbyville, IN 46176 (US)

(72) Inventors: THOMAS, Lawrence Robert Greenwood, Indiana 46143 (US) WELCH, Harold N. Carmel, Indiana 46032 (US) MENDENHALL, Andrew B. Mooresville, Indiana 46158 (US) MIDKIFF, Todd C. Noblesville, Indiana 46060 (US) LACY, Brandon M. Indianapolis, Indiana 46241 (US) ZINK, Paul T. Fishers, Indiana 46038 (US) (74) Representative: ARC-IP  ARC-IP sprl Rue Emile Francqui 4 1435 Mont-Saint-Guibert 1435 Mont-Saint-Guibert (BE)