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:
Dec. 16, 2008
Filed:
Jun. 17, 2005
Applicants:
Eric Bart Sirota, Flemington, NJ (US);
Jack Wayne Johnson, Clinton, NJ (US);
Robert R. Simpson, Scotch Plains, NJ (US);
Inventors:
Eric Bart Sirota, Flemington, NJ (US);
Jack Wayne Johnson, Clinton, NJ (US);
Robert R. Simpson, Scotch Plains, NJ (US);
Assignee:
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G 21/16 (2006.01); C10G 21/00 (2006.01); C10G 21/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
Extra heavy lube base stocks are separated from heavy lube oils with a polar solvent in an amount sufficient to form a first light phase and a second heavy phase. The phases are then separated and the solvent is removed from the second heavy phase to yield an extra heavy lube.