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:
Sep. 04, 2001
Filed:
Jun. 12, 2000
Thomas M. Vickers, Jr., Concord, OH (US);
Runhai Lu, Stow, OH (US);
Lynn E. Brower, Solon, OH (US);
Samy M. Shendy, Cuyahoga Falls, OH (US);
Rainer Packe-Wirth, Trostberg, DE;
Hong Gao, San Jose, CA (US);
MBT Holding AG, Zurich, CH;
Abstract
A substantially non-crosslinked polymer cementitious composition dispersant for the improvement of the fluidity of cementitious compositions comprising hydrophilic side chain substituted polyimide or polyamide backbone units, having at least some proportion of grafted oligomeric or polymeric hydrophilic side chains linking at least one of amides, esters, and thioesters, wherein the polymer cementitious composition is water soluble, and wherein crosslinking is such that in a statistical sampling there is greater than zero to less than 0.1 mole % of backbone units involved in crosslinking.