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:
Apr. 29, 2014
Filed:
Nov. 29, 2005
Applicants:
Stephen Arrowsmith, Didcot, GB;
Matthew D. Irving, Fairford, GB;
Inventors:
Stephen Arrowsmith, Didcot, GB;
Matthew D. Irving, Fairford, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M 133/16 (2006.01); C10M 159/20 (2006.01); C10M 125/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
Lubricating oil compositions having a sulfated ash content of no more than 1.0 mass %, which contain a major amount of oil of lubricating viscosity, a minor amount of calcium salicylate detergent, an amount of a magnesium-based detergent providing at least 200 ppm of magnesium, and a basic, low molecular weight, nitrogen-containing dispersant, which compositions provide improved top ring wear protection in internal combustion engines.