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:
Apr. 08, 1986
Filed:
Jan. 12, 1984
Homer Branch, III, New Orleans, LA (US);
Sun Drilling Products Corp., Bellechasse, LA (US);
Abstract
The present invention provides a dispersant for water-based, solids-containing fluids comprising a copolymer of a sulfonated styrene monomer and a second monomer selected from the group consisting of maleic anhydride, maleimide, and dimethyl maleate, wherein the copolymer contains an amide formed on the second monomer. The amide can be formed on the second monomer by a reaction using a nitrogen source selected from the group consisting of ammonia, primary amines, and secondary amines. The dispersant can be used to form a water based drilling fluid. The present invention also provides a process of producing the dispersant.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile