The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 02, 2010
Filed:
Jun. 06, 2007
Applicants:
Marianela Perez-pena, Grayslake, IL (US);
Yanfei Peng, Gurnee, IL (US);
Srinivas Veeramasuneni, Round Lake, IL (US);
Inventors:
Marianela Perez-Pena, Grayslake, IL (US);
Yanfei Peng, Gurnee, IL (US);
Srinivas Veeramasuneni, Round Lake, IL (US);
Assignee:
United States Gypsum Company, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B 24/12 (2006.01); C04B 22/16 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of making a rapid setting composition for cement boards is disclosed. Compositions including portland cement, fly ash, gypsum, alkanolamine and phosphate are disclosed. A synergistic interaction between the alkanolamine and phosphate increases the effectiveness of accelerating reactions thus allowing for quick setting and increased early-age compressive strength compositions.