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:
Apr. 19, 1994
Filed:
Apr. 09, 1992
Applicant:
Inventor:
Pierre Eisenmann, Paris, FR;
Assignee:
Schlumberger Technology Corporation, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; G01N / ;
U.S. Cl.
CPC ...
436 60 ; 73 2336 ; 73 6152 ; 210656 ; 364497 ; 364502 ; 436 30 ; 436161 ;
Abstract
A method of analyzing a mixture of hydrocarbon oils by using gel-permeation chromatography together with infrared detection. According to the method the signals from the infrared detector are combined to form fingerprints (M) which are characteristic of the samples being analyzed and which represent the molecular size distribution of the various hydrocarbon fractions in the samples. Then, the fingerprints are combined either to determine the concentration and the fingerprints of an unknown oil present in a mixture of two oils, or else the concentrations of n known oils in a mixture of the n oils.