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:
Jan. 29, 1985
Filed:
Mar. 29, 1982
Roy F House, Houston, TX (US);
Lonnie D Hoover, Chappell Hill, TX (US);
NL Industries, Inc., New York, NY (US);
Abstract
A method of activating hydroxyethyl cellulose (HEC) such that the HEC will hydrate in heavy brines having a density greater than about 13.5 pounds per gallon at ambient temperature, the activated HEC compositions so produced, and viscous well servicing compositions wherein an oleaginous liquid and a compatiblizing agent are admixed to form a viscous slurry, admixing therewith an aqueous solution of an inorganic salt which has an exothermic heat of solution, and thereafter admixing HEC therewith to form a viscous pourable composition.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile