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:
Dec. 27, 2016
Filed:
Feb. 15, 2012
Applicants:
Mark C. Davies, Belper, GB;
Stephen J. Cook, Belper, GB;
Alexandra Mayhew, Belper, GB;
Inventors:
Assignee:
The Lubrizol Corporation, Wickliffe, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10M 139/00 (2006.01); C10M 159/24 (2006.01); C10M 141/08 (2006.01); C10M 163/00 (2006.01);
U.S. Cl.
CPC ...
C10M 141/08 (2013.01); C10M 163/00 (2013.01); C10M 2207/028 (2013.01); C10M 2207/123 (2013.01); C10M 2215/086 (2013.01); C10M 2215/28 (2013.01); C10M 2219/046 (2013.01); C10M 2223/045 (2013.01); C10N 2210/02 (2013.01); C10N 2230/52 (2013.01); C10N 2240/10 (2013.01);
Abstract
A lubricant composition containing a metal-containing detergent in an amount to provide at least about 2 TBN to the lubricant, and a dispersant comprising an oleophilic portion comprising at least about 40 carbon atoms and an acid-bearing portion, characterized in having a TAN:TBN ratio of at least about 0.8, exhibits good TBN retention.