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:
Jan. 20, 2026
Filed:
Oct. 31, 2022
Chevron Japan Ltd., Tokyo, JP;
Ryota Sawairi, Omaezaki, JP;
Seiya Shimizu, Makinohara, JP;
Masami Fuchi, Makinohara, JP;
Takahiro Nakagawa, Omaezaki, JP;
Satoshi Ohta, Matsudo, JP;
Koichi Kubo, Yokohama, JP;
Ataru Minami, Omaezaki, JP;
Chevron Japan Ltd., Tokyo, JP;
Abstract
A lubricating oil composition for an automotive vehicle with an electric motor and/or generator is provided. The lubricating oil composition includes: a. a major amount of an oil of lubricating viscosity having a kinematic viscosity at 100° C. in a range of about 1.5 mm/s to about 20 mm/s; b. an sulfur-based additive including a thiadiazole and a sulfurized polyolefin of formula (I): where Ris hydrogen or methyl, and Ris a C8-C40 hydrocarbyl group, the sulfur-based additive providing sulfur to the lubricating oil composition in an amount of 0.01 wt. % to 0.2 wt. %, based on the total weight of the lubricating oil composition; c. a phosphorus compound; and d. an ashless polyisobutenyl succinimide-based dispersant containing boron. The lubricating oil composition provides exceptional volume resistivity, detergency, thermal and oxidative stability, wear resistance, and corrosion resistance at high temperatures.