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. 08, 2015
Filed:
Dec. 16, 2011
Ronald Jukes, Rotterdam, NL;
Todd Brookhart, Walnut Creek, CA (US);
Christophe P. Le Deore, Montivilliers, FR;
Ronald Jukes, Rotterdam, NL;
Todd Brookhart, Walnut Creek, CA (US);
Christophe P. Le Deore, Montivilliers, FR;
Chevron Oronite SAS, Cedex, FR;
Chevron Oronite Company LLC, San Ramon, CA (US);
Chevon Oronite Technology B.V., Rotterdam, NL;
Abstract
Disclosed herein is a trunk piston engine lubricating oil composition comprising (a) a major amount of an oil of lubricating viscosity; (b) one or more carboxylate-containing detergents comprising a salt of an alkyl-substituted hydroxyaromatic carboxylic acid, wherein at least about 50% of the alkyl moiety of the alkyl-substituted hydroxyaromatic carboxylic acid comprises Calkyl groups derived from one or more normal alpha olefins; and (c) one or more zinc dithiophosphates in an amount of about 0.02 to about 0.12 wt. % in terms of phosphorus content.