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:
Oct. 08, 2019
Filed:
Mar. 06, 2017
Chevron Oronite Company Llc, San Ramon, CA (US);
Seyedeh Mahboobeh Hosseini, Richmond, CA (US);
John Robert Miller, San Rafael, CA (US);
Kevin David Carabell, Fairfax, CA (US);
Chevron Oronite Company LLC, San Ramon, CA (US);
Abstract
Provided is an internal combustion engine lubricating oil composition which comprises a major amount of an oil of lubricating viscosity; one or more oil soluble or oil dispersible organic acid anhydrides, said anhydride comprising at least one hydrocarbyl or hydrocarbylene moiety having from about 10 to about 400 carbon atoms; and an oil soluble or oil dispersible secondary hydrocarbylamine compound, a tertiary hydrocarbylamine compound, or combinations thereof. Also provided is a method for maintaining and/or increasing fresh oil TBN of a lubricating oil composition while at the same time improving seal performance in an internal combustion engine.