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. 06, 2004
Filed:
May. 23, 2002
Applicant:
Inventors:
Thomas T. Curtis, Mentor, OH (US);
Ewa A. Bardasz, Mentor, OH (US);
Daniel H. Heath, Ravenna, OH (US);
Peter B. Thomson, Danville, CA (US);
Assignee:
The Lubrizol Corporation, Wickliffe, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
C10M / ;
Abstract
A sump-lubricated internal combustion engine equipped with exhaust gas recycle, lubricated with (a) an oil of lubricating viscosity, (b) 0.05 to 1 percent by weight of an amide of an aliphatic carboxylic acid, and (c) at least one additional dispersant, detergent, or anti-wear agent, exhibits reduced temperature of the lubricant in the sump.