Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2008-03-04
2008-03-04
Szekely, Peter (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
Reexamination Certificate
active
10511499
ABSTRACT:
A mixture is used in conjunction with water is used for preparing a slurry that hydrates to form an exterior gypsum cement. The mixture includes 30-70% by weight hydraulic cement, 30-70% by weight calcined gypsum and 0.05-2.5% polycarboxylate. When the mixture is added to water less than 40 weight % based on the weight of the mixture, a slurry is formed that expands very little while it cures.
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“A New Generation of Gypsum Dispersing Agents,” S. Lee, F. Liotta and S. Schwartz, Global Gypsum Conference 2003 Paper 17, Barcelona. Sep. 14-16, 2002.
“Gypsum Dispersing Agents,” Steven A. Schwartz, Global Gypsum Conference 2002, Florida, Mar. 3-4, 2002.
Bedwell William K.
Kaligian, II Raymond A.
Lettkeman Dennis Mark
Whiteside Eldon L.
Greer Burns & Crain
Janci David F.
Sahu Pradip
Szekely Peter
United States Gypsum Company
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