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, 2010
Filed:
Feb. 27, 2007
Ewa Bardasz, Mentor, OH (US);
Virginia A. Carrick, Chardon, OH (US);
John K. Pudelski, Cleveland Heights, OH (US);
Renee A. Eveland, Concord Township, Lake County, OH (US);
Douglas M. Barr, Hudson, OH (US);
Matthew D. Gieselman, Willoughby Hills, OH (US);
Ewa Bardasz, Mentor, OH (US);
Virginia A. Carrick, Chardon, OH (US);
John K. Pudelski, Cleveland Heights, OH (US);
Renee A. Eveland, Concord Township, Lake County, OH (US);
Douglas M. Barr, Hudson, OH (US);
Matthew D. Gieselman, Willoughby Hills, OH (US);
The Lubrizol Corporation, Wickliffe, OH (US);
Abstract
Lubricant compositions comprising (a) an oil of lubricating viscosity; and (b) at least one non-metal-containing additive, comprising a nitrogen-containing dispersant having a total base number of at least about 90 are useful for lubricating an internal combustion engine. The lubricants have less than 1.0% sulfated ash and a total base number of at least about 8.5, and at least 30% of the total base number of the composition is provided by non-metal-containing additives. The lubricants exhibit a high TBN without deterioration of elastomeric seals.