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. 02, 2010
Filed:
Feb. 06, 2007
Chang Samuel Hsu, Warrenville, IL (US);
Gary J Dechert, Asbury, NJ (US);
Haven S. Aldrich, Baton Rouge, LA (US);
Gerald D. Dupre, Clinton, LA (US);
Chang Samuel Hsu, Warrenville, IL (US);
Gary J Dechert, Asbury, NJ (US);
Haven S. Aldrich, Baton Rouge, LA (US);
Gerald D. Dupre, Clinton, LA (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
The present invention is devoted to an analytical method for directly determining carbon number and molecular weight distributions of isoparaffin mixtures. The analytical means uses low in-scan emitter-current field-ionization mass spectroscopy to substantially reduced or eliminated molecular ion fragmentation for isoparaffins, which allows direct measurement of isoparaffin molecular ions for their distributions. The analytical means is capable of directly characterizing isobutane to C+ isoparaffins, covering naphtha to gas oil ranges.