(19)

(11)

EP 4 816 751 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 25721512.9 (22) Date of filing: 22.04.2025

(51) International Patent Classification (IPC):  F26B 3/04(2006.01) F26B 23/00(2006.01) F26B 15/12(2006.01) F26B 23/10(2006.01) (52) Cooperative Patent Classification (CPC): F26B 15/12; F26B 23/005; F26B 23/001; F26B 3/04; F26B 23/10 (86) International application number: PCT/EP2025/060944 (87) International publication number: WO 2025/247560 (04.12.2025 Gazette 2025/49)

(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: GE KH LA MA MD TN (30) Priority: 31.05.2024 IN 202411042477 (71) Applicant: Saint-Gobain Placo 92400 Courbevoie (FR)	(72) Inventors: CANTONNET, Jerome 92400 Courbevoie (FR) HIEL-BERAUD, Hugo 92400 Courbevoie (FR) MONTIGNY, Benoit 92400 Courbevoie (FR) PATEL, Manish Chennai 600008 (IN) ROSTRON, Tom East Leake, Loughborough LE12 6JS (GB) (74) Representative: Murgitroyd & Company  165-169 Scotland Street Glasgow G5 8PL Glasgow G5 8PL (GB)