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:
Nov. 29, 1994
Filed:
Aug. 20, 1993
Klein A Rodrigues, Duncan, OK (US);
Larry S Eoff, Duncan, OK (US);
Halliburton Company, Duncan, OK (US);
Abstract
A functionalized polyamine effective to retard the setting rate of a slurry of hydraulic cement is disclosed. A slurry of hydraulic cement in water which includes the functionalized polyamine, which is a polyethylene amine having attached thereto moieties selected from the group consisting of carboxylic acid groups and phosphonic acid groups, is useful to cement a conduit in a subterranean formation penetrated by a wellbore wherein it is desirable to retard the setting rate of the cement to enable placement of the slurry.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile