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:
Jul. 08, 1986
Filed:
Sep. 28, 1984
Applicant:
Inventors:
Lino Vio, Pau, FR;
Gilles Meunier, Lescar, FR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; E21B / ;
U.S. Cl.
CPC ...
252 / ; 252 / ; 536114 ;
Abstract
Stabilization of aqueous solutions of polysaccharides, even in the hot, by the addition of alkali metal dialkyl-dithiocarbamate and sodium chloride or calcium chloride. Applications to drilling fluids and to the improved recovery of crude oil.