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:
May. 10, 1988
Filed:
May. 13, 1986
Cheng-Fa Lu, New Castle County, DE (US);
Carl A Lukach, New Castle County, DE (US);
Robert R Pas, Earls Court, GB;
Aqualon Company, Wilmington, DE (US);
Abstract
Disclosed are (1) drilling fluid compositions consisting essentially of an aqueous medium selected from the group consisting of fresh and tap water, natural and synthetic sea water, and natural and synthetic brine, and carboxymethyl guar having a degree of substitution (D.S.) of 0.1 to 0.4; (2) drilling fluid compositions consisting essentially of an aqueous medium selected from the group consisting of fresh and tap water, natural and synthetic sea water, and natural and synthetic brine, a carboxymethyl guar having a D.S. of from 0.1 to 0.4, and a metal salt selected from the group consisting of water-soluble metal carbonates and bicarbonates; and (3) drilling fluid compositions consisting essentially of an aqueous medium selected from the group consisting of fresh and tap water, a carboxymethyl guar having a D.S. of from 0.1 to 0.4, a metal salt selected from the group consisting of water-soluble metal carbonates and bicarbonates, and a noncarbonate polyvalent metal salt.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile