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:
Feb. 06, 1996
Filed:
Jun. 06, 1995
Applicant:
Inventors:
Didier C Lambert, Lavera, FR;
Andre Martens, Chateauneuf les Martigues, FR;
Assignees:
BP Oil International Limited, London, GB;
BP Chemicals Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J / ; G01N / ;
U.S. Cl.
CPC ...
364500 ; 364499 ; 25033907 ;
Abstract
The octane number of a product is directly determined from its near infrared (NIR) absorption spectrum in the wave number spectral range of from 6667 to 3840 centimeter .sup.-1. A number (n) of frequencies is selected within this range, and the (n) absorbance values are correlated with the octane number by using a multivariate regression analysis.