Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Qiang Yu0
Qiangxia Liu0
Weixin David Song0
Date of Patent
August 10, 2010
Patent Application Number
11213529
Date Filed
August 26, 2005
Patent Citations Received
Patent Primary Examiner
Patent abstract
The invention provides gypsum wallboard, made from gypsum-containing slurries having outstanding hydration rate characteristics comprising alpha-hemihydrate ground to a particular particle size distribution range and having a Blaine surface area in the range from about 3100 cm2/g to about 9000 cm2/g, alone or in combination with beta-hemihydrate.
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