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:
Nov. 20, 2001
Filed:
Mar. 10, 1999
Applicant:
Inventors:
Jeffrey H. Sherman, Dallas, TX (US);
James W. Hershberger, Oxford, OH (US);
Richard T. Taylor, Oxford, OH (US);
Assignee:
Miami University, Oxford, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 7/10 ; C07C 7/00 ; C10G / ; C10G 2/920 ;
U.S. Cl.
CPC ...
C07C 7/10 ; C07C 7/00 ; C10G / ; C10G 2/920 ;
Abstract
Polynuclear aromatic hydrocarbons (PAHs) and other contaminants are removed from petroleum distillates by mixing a solvent with petroleum distillate to extract the contaminants therefrom. The solvent is recovered and distilled to separate the contaminants therefrom, and is then reused. The petroleum distillate having the contaminants separated therefrom is also distilled to remove any remaining solvent therefrom, with the recovered solvent being reused.