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. 09, 1993
Filed:
Mar. 15, 1991
Applicant:
Inventor:
Michael Stephens, Bartlesville, OK (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526240 ; 523130 ; 526264 ; 526287 ;
Abstract
A unique tetrapolymer and an additive package for reducing water loss from cement comprising a tetrapolymer, base, and electrolyte, at least one surfactant, and water is disclosed. A process for producing cement slurries with improved water loss properties, as well as an improved method for cementing gas and oil wells is also disclosed.
Stephens, Michael. (1993). Tetrapolymerization product of 2-acrylamido-2-methyl propane sulfonic (U.S. Patent No. 5260391). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5260391
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile