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:
Mar. 18, 2014
Filed:
Jun. 22, 2010
Applicants:
Heidi Mediaas, Heimdal, NO;
Knut Grande, Trondheim, NO;
Hege Kummernes, Ranheim, NO;
Jens Emil Vindstad, Trondheim, NO;
Inventors:
Heidi Mediaas, Heimdal, NO;
Knut Grande, Trondheim, NO;
Hege Kummernes, Ranheim, NO;
Jens Emil Vindstad, Trondheim, NO;
Assignee:
Statoil Petroleum AS, Stavanger, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 7/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for isolation and quantification of naphthenate forming acids (ARN-acids) in crude oils is disclosed. The method involves selective absorbtion/adsorption of ARN acids by a solid medium. Isolation of the solid medium and transferring the ARN acids to an organic solvent which can by analysed for its ARN acid content.