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. 23, 1980
Filed:
Jun. 23, 1978
Applicant:
Inventors:
Walther Schulz, Vechta, DE;
Wilhelm Gebetsberger, Barnstorf, DE;
Assignee:
Wintershall Aktiengesellschaft, Kassel, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ; E21B / ;
U.S. Cl.
CPC ...
166272 ; 166252 ; 166273 ; 166274 ;
Abstract
A method for the recovery of crude petroleum from mineral oil deposits, utilizing hot water flooding or alkali containing hot water flooding is described.