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:
Sep. 01, 2026
Filed:
Nov. 12, 2024
Infineum International Limited, Linden, NJ (US);
Alec C. Labb, Hoboken, NJ (US);
Nancy Z. Diggs, Phoenix, AZ (US);
Jun Cui, Berkeley Heights, NJ (US);
Xiaobo Shen, Laurence Harbor, NJ (US);
Infineum International Limited, Linden, NJ (US);
Abstract
This invention relates to lubricating oil compositions containing less than 1000 ppm phosphorus, comprising or resulting from the admixing of A) one or more base oil(s), B) one or more dispersant(s), wherein said one or more dispersants comprise at least 2.0 mass %, based on the total mass of the lubricating oil composition, of one or more unborated poly(alkenyl)succinimides, in which the polyalkenyl is derived from polyisobutylene and the imide is derived from polyamine ('PIBSA-PAM'); and C) one or more detergent(s), wherein said one or more detergent(s) together provide soap to the lubricating oil composition in an amount of 0.1 to 0.9 mass %, based on the total mass of the lubricating oil composition; wherein the ratio of mass %, based on the total mass of the lubricating oil composition, of the one or more unborated PIBSA-PAM(s) to soap of the lubricating oil composition is 6.65 or more.