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. 19, 2002
Filed:
Jun. 14, 2001
Neal S. Berke, North Chelmsford, MA (US);
Maria C. Hicks, Newton, MA (US);
James J. Malone, Stoneham, MA (US);
W. R. Grace & Co.-Conn., New York, NY (US);
Abstract
Additive for cementitious compositions, comprising: at least one admixture, such a shrinkage reducing admixture, an air entraining admixture, a water reducing admixture, an inorganic salt, a corrosion inhibitor, an accelerator, a retarder, or mixture thereof; and a triblock polyoxyalkene copolymer surfactant having the formula R O—(A O) —(A O) —(A O) —R wherein R and R individually represent hydrogen, a C -C alkyl group, a C -C cycloalkyl group, or an aryl group; A represents a C alkyl group, A represents a branched or linear C alkyl group; “x” represents an integer of 42-133; and “y” represents an integer of 21 to 68.