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:
May. 31, 2022
Filed:
Jan. 14, 2021
Exxonmobil Technology and Engineering Company, Annandale, NJ (US);
Zhisheng Gao, Flemington, NJ (US);
ExxonMobil Technology and Engineering Company, Annandale, NJ (US);
Abstract
Sulfur-free, ashless, and low phosphorus-containing lubricant compositions for use as engine oil having improved oxidation stability. The lubricant composition can include about 60.0 mass % to about 99.8 mass % of an oil base stock, at least one ashless antiwear additive, at least one ashless detergent, and at least one antioxidant, based on a total mass of the lubricant composition. The oil base stock can include at least one polyalphaolefin and at least one alkyl naphthalene. The lubricant composition can contain less than about 0.05 mass % phosphorus, less than about 0.05 mass % sulfur, and less than about 0.05 mass % ash. The lubricant composition can be made by a process that includes combining the above-mentioned components to provide a lubricant composition.