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:
Nov. 24, 2015
Filed:
Dec. 20, 2013
Kenneth D. Nelson, Napa, CA (US);
Alexander B. Boffa, Oakland, CA (US);
William M. Kleiser, Lafayette, CA (US);
Stephen D. Stults, Benicia, CA (US);
James A. Mcgeehan, San Rafael, CA (US);
Wim Van Dam, Bergschenhoek, NL;
Richard E. Cherpeck, Cotati, CA (US);
Kenneth D. Nelson, Napa, CA (US);
Alexander B. Boffa, Oakland, CA (US);
William M. Kleiser, Lafayette, CA (US);
Stephen D. Stults, Benicia, CA (US);
James A. McGeehan, San Rafael, CA (US);
Wim Van Dam, Bergschenhoek, NL;
Richard E. Cherpeck, Cotati, CA (US);
Chevron Oronite Company LLC, San Ramon, CA (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
A lubricating oil composition having a sulfur content of up to about 0.4 wt. % and a sulfated ash content of up to about 0.5 wt. % as determined by ASTM D874 is disclosed which comprises (a) a major amount of an oil of lubricating viscosity; (b) at least one oil-soluble or dispersed oil-stable boron-containing compound having no more than about 600 ppm of boron, based upon the total mass of the composition; and (c) at least one oil-soluble or dispersed oil-stable molybdenum-containing compound having no more than about 800 ppm of molybdenum, based upon the total mass of the composition; wherein the lubricating oil composition has a ratio of sulfur to molybdenum of about 5:1 to about 500:1.