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:
Jun. 06, 2023
Filed:
Aug. 20, 2021
Chevron Oronite Company Llc, San Ramon, CA (US);
Chevron Oronite Technology B.v., San Ramon, CA (US);
Mia Gill, Novato, CA (US);
Wilhelmus Petrus Antonie van Houten, Prinsenbeek, NL;
Chevron Oronite Company LLC, San Ramon, CA (US);
Chevron Oronite Technology B.V., San Ramon, CA (US);
Abstract
A method for improving low temperature performance of a lubricant in a compression-ignited internal combustion engine is disclosed. The method comprises operating the engine with a monograde lubricating oil composition comprising (a) a major amount of a base oil of lubricating viscosity; and (b) a minor amount of an overbased alkaline earth metal salt of an alkyl-substituted hydroxyaromatic compound, the alkyl substituent being a residue derived from an isomerized alpha-olefin having from 12 to 40 carbon atoms per molecule.