(19)
(11)
EP 1 185 485 A1
(12)
(43)
Date of publication:
13.03.2002
Bulletin 2002/11
(21)
Application number:
00932382.5
(22)
Date of filing:
10.05.2000
(51)
International Patent Classification (IPC)
7
:
C04B
28/14
,
B29C
47/14
(86)
International application number:
PCT/US0013/145
(87)
International publication number:
WO 0076/937
(
21.12.2000
Gazette 2000/51)
(84)
Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI
(30)
Priority:
15.06.1999
US 139183 P
09.08.1999
US 147801 P
(71)
Applicant:
National Gypsum Properties LLC
Charlotte, NC 28211-3498 (US)
(72)
Inventor:
BURKE, William, Roy
Tonawanda, NY 14150 (US)
(74)
Representative:
Akers, Noel James et al
Howrey Simon Arnold & White,City Point,One Ropemaker Street
London EC2Y 9HS
London EC2Y 9HS (GB)
(54)
GYPSUM WALLBOARD CORE, AND METHOD AND APPARATUS FOR MAKING THE SAME