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. 02, 2003
Filed:
Dec. 11, 2000
Applicant:
Inventors:
Hendrika Cornelia Kuzee, Oost Souburg, NL;
Hendricus Wilhelmus Carolina Raaijmakers, Roosendaal, NL;
Assignee:
Cooperatie Cosun U.A., Roosendaal, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07H 1/00 ; C07G 1/100 ; C02F 1/00 ; C02F 5/10 ;
U.S. Cl.
CPC ...
C07H 1/00 ; C07G 1/100 ; C02F 1/00 ; C02F 5/10 ;
Abstract
Carboxyl-containing fructans such as carboxymethylinulin can be successfully used to prevent deposition of scale composed of, for example, calcium, barium and strontium salts of sulphuric acid and carbonic acid in oil extraction. In the oil extraction method, 0.5-200 ppm of a carboxyl-containing fructan that contains 0.3-3 carboxyl groups per mono-saccharide unit is incorporated in the process water, in the process equipment or in the oil-containing formation.