(19)

(11)

EP 4 402 110 A1

(12)

(43) Date of publication: 24.07.2024 Bulletin 2024/30 (21) Application number: 22798407.7 (22) Date of filing: 16.09.2022

(51) International Patent Classification (IPC):  C04B 11/028(2006.01) (52) Cooperative Patent Classification (CPC): C04B 11/028 (86) International application number: PCT/US2022/076523 (87) International publication number: WO 2023/044403 (23.03.2023 Gazette 2023/12)

(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 (30) Priority: 17.09.2021 US 202163245798 P 14.09.2022 US 202217932125 (71) Applicant: United States Gypsum Company Chicago, IL 60661 (US)	(72) Inventor: WALKER, Blair Almonte, ON K0A1A0 (CA) (74) Representative: BSB Patentanwälte Schütte & Engelen Partnerschaft mbB  Am Markt 10 59302 Oelde 59302 Oelde (DE)