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:
Jul. 29, 2003
Filed:
Jul. 12, 2002
Applicant:
Inventors:
Carl K. Esche, Jr., Richmond, VA (US);
Vincent J. Gatto, Midlothian, VA (US);
William Y. Lam, Glen Allen, VA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
C10M / ;
Abstract
It has unexpectedly been found that the combination of (1) an alkylated diphenylamine, (2) a sulfurized olefin/fatty oil and/or an ashless dialkyldithiocarbamate, and (3) an alkylated phenothiazine, is highly effective at controlling crankcase lubricant oxidation and deposit formation. The present invention includes lubricating compositions, lubricating additives, and methods for improving the antioxidancy and/or deposit formation properties of a lubricating composition.