[12] Patent
[11] Patent No.:GC0007666  
[45] Date of Publishing the Grant of the Patent: 30/Apr /2018                48/2018  
Number of the Decision to Grant the Patent:2018/126582
Date of the Decision to Grant the Patent:29/Apr/2018

[21] Application No.:GC 2011-20119

[22] Filing Date:24/12/2011

[30] Priority:

[33] State [32] Priority date [31] Priority No.
US
23/12/2010
12/977,801

[72] Inventors:1- Ashish DUBEY،2- Cesar CHAN

[73] Owner: United States Gypsum Company, 550 West Adams Street, Chicago, IL 60661, USA

[74] Agent: Suleiman I. Al-Ammar Law Office

  

 

  

[51]IPC:
Int. Cl.: C04B 28/04, 28/14, 20/10; E04B 1/94, 5/02; E04C 2/26 (2006.01)

[56] Cited Documents:

-US 2009011207 A1 (DUBEY ASHISH [US] ) 8 January 2009
-WO 0242064 A1 (UNITED STATES GYPSUM CA
[US] ) 30 May 2002
-WO 2007079104 A2 (UNITED STATES GYPSUM CA 10
[US] ) 12 July 2007
 
Examiner: Yahiya Naser Al-BuSafi

[54] HIGH PERFORMANCE NON-COMBUSTIBLE GYPSUM-CEMENT COMPOSITIONS WITH ENHANCED WATER DURABILITY AND THERMAL STABILITY FOR REINFORCED CEMENTITIOUS LIGHTWEIGHT STRUCTURAL CEMENT PANELS
[57] Abstract: Structural cement panel for resisting transverse and shear loads equal to transverse and shear loads provided by plywood and oriented strain board, when fastened to framing for use in shear walls, flooring and roofing systems. The panels provide reduced thermal transmission compared to other structural cement panels. The panels employ one or more layers of a continuous phase resulting from curing an aqueous mixture of calcium sulfate alpha hemihydrate, hydraulic cement, coated expanded perlite particles filler, optional additional fillers, active pozzolan and lime. The coated perlite has a particle size of 1-500 microns, a median diameter of 20-150 microns, and an effective particle density (specific gravity) of less than 0.50 g/cc. The panels are reinforced with fibers, for example alkali-resistant glass fibers. The preferred panel contains no intentionally added entrained air. A method of improving fire resistance in a building is also disclosed.
No. of claims: 10     No. of figures: 27


 

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