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:
Aug. 01, 1978
Filed:
Sep. 13, 1976
Applicant:
Inventors:
Walter H Carter, Houston, TX (US);
Charles A Christopher, Stafford, TX (US);
Thomas Jefferson, Houston, TX (US);
Assignee:
Texaco Inc., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
252316 ; 166246 ; 252 / ;
Abstract
Method for imparting superior viscosity to an aqueous polysaccharide solution comprises prehydrating polysaccharide in fresh and deionized water. The viscosity imparted to the final aqueous solution by this method is greater than the viscosity of an aqueous polysaccharide solution initially hydrated in hard water. Alternatively, the polysaccharide solution in fresh water may be used alone or diluted with water containing inorganic ions.