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. 21, 2012
Filed:
Apr. 10, 2008
Jacob J. Habeeb, Westfield, NJ (US);
Eugine Choi, Marlton, NJ (US);
Douglas E. Deckman, Mullica Hill, NJ (US);
William H. Buck, West Chester, PA (US);
William L. Maxwell, Pilesgrove, NJ (US);
Jacob J. Habeeb, Westfield, NJ (US);
Eugine Choi, Marlton, NJ (US);
Douglas E. Deckman, Mullica Hill, NJ (US);
William H. Buck, West Chester, PA (US);
William L. Maxwell, Pilesgrove, NJ (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
Lubricating oil compositions of the invention comprise a major amount of a base oil of lubricating viscosity and an effective amount of at least one lubricant antioxidant, the base oil comprising a blend of a Group III base oil derived from a synthesis gas, and a Group IV base oil wherein the ratio of the Group III to Group IV base oils is such that the lubricating composition exhibits an oxidation stability determined by a measure of high temperature deposits that is less than half the mathematical sum of the oxidative stability determined for each of the unblended Group III and Group IV oils containing the same antioxidant in the same amount as in the blend.