EP 4277883 A1 20231122 - OPEN-CELLED GYPSUM CORE, GYPSUM ACOUSTIC PANEL, AND METHOD FOR MAKING SAME

Title (en)

OPEN-CELLED GYPSUM CORE, GYPSUM ACOUSTIC PANEL, AND METHOD FOR MAKING SAME

Title (de)

OFFENZELLIGER GIPSKERN, AKUSTIKPLATTE AUS GIPS UND VERFAHREN ZUR HERSTELLUNG DAVON

Title (fr)

NOYAU DE GYPSE À CELLULES OUVERTES, PANNEAU ACOUSTIQUE EN GYPSE ET SON PROCÉDÉ DE FABRICATION

Publication

EP 4277883 A1 20231122 (EN)

Application

EP 22700163 A 20220112

Priority

US 202163136977 P 20210113
US 202217647400 A 20220107
IB 2022050200 W 20220112

Abstract (en)

[origin: WO2022153181A1] An open cell set gypsum core includes an interlocking matrix of gypsum having air voids distributed therein. The air voids define cells having cell walls formed by the interlocking matrix. The interlocking matrix further includes channels distributed therein. The channels interconnect the air voids and comprise openings in the cell walls.

IPC 8 full level

C04B 28/14 (2006.01); C04B 38/10 (2006.01); E04C 2/04 (2006.01); C04B 111/52 (2006.01)

CPC (source: EP)

B28B 19/0092 (2013.01); C04B 28/14 (2013.01); C04B 38/106 (2013.01); E04C 2/049 (2013.01); C04B 2111/0062 (2013.01); C04B 2111/52 (2013.01)

C-Set (source: EP)

C04B 28/14 + C04B 14/42 + C04B 24/38 + C04B 38/106 + C04B 40/0028 + C04B 40/0263
C04B 38/106 + C04B 24/08 + C04B 28/14 + C04B 38/0058

Designated contracting state (EPC)

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 state (EPC)

BA ME

Designated validation state (EPC)

KH MA MD TN

DOCDB simple family (publication)

WO 2022153181 A1 20220721; CA 3204020 A1 20220721; EP 4277883 A1 20231122; MX 2023007348 A 20230703

DOCDB simple family (application)

IB 2022050200 W 20220112; CA 3204020 A 20220112; EP 22700163 A 20220112; MX 2023007348 A 20220112