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:
Sep. 10, 1985
Filed:
May. 31, 1983
Applicant:
Inventors:
Muyen M Wu, Cuyahoga Falls, OH (US);
Lawrence E Ball, Cuyahoga Falls, OH (US);
Assignee:
The Standard Oil Company, Cleveland, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
252 / ; 166275 ; 525294 ; 525409 ;
Abstract
Water soluble block copolymers having two or more water soluble polymer blocks useful for controlling the viscosity of aqueous media used in enhanced oil recovery techniques are described.