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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.:

US 12338408 B1

PDFFull Text
Date of Patent:
Jun. 24, 2025

Filed:

Nov. 06, 2019

Lubricating oil composition

Applicant:

Eneos Corporation, Tokyo, JP;

Inventors:

Yohei Susukida, Tokyo, JP;

Yasushi Onumata, Tokyo, JP;

Akira Tada, Tokyo, JP;

Noriko Ayame, Tokyo, JP;

Assignee:

ENEOS CORPORATION, Tokyo, JP;

Attorney:

GREENBLUM & BERNSTEIN, P.L.C.

Primary Examiner:

Taiwo Oladapo

Int. Cl.
CPC ...
C10M 141/00 (2006.01); C10M 129/54 (2006.01); C10M 133/12 (2006.01); C10M 133/44 (2006.01); C10M 135/10 (2006.01); C10M 137/02 (2006.01); C10M 139/00 (2006.01); C10M 141/10 (2006.01); C10M 169/04 (2006.01); C10M 177/00 (2006.01); C10N 30/00 (2006.01); C10N 30/02 (2006.01); C10N 30/04 (2006.01); C10N 30/10 (2006.01); C10N 30/14 (2006.01); C10N 40/00 (2006.01); C10N 40/04 (2006.01); C10N 40/25 (2006.01); C10N 70/00 (2006.01);
U.S. Cl.
CPC ...
C10M 141/10 (2013.01); C10M 129/54 (2013.01); C10M 133/12 (2013.01); C10M 133/44 (2013.01); C10M 135/10 (2013.01); C10M 137/02 (2013.01); C10M 139/00 (2013.01); C10M 169/04 (2013.01); C10M 177/00 (2013.01); C10M 2203/003 (2013.01); C10M 2207/144 (2013.01); C10M 2215/26 (2013.01); C10M 2215/30 (2013.01); C10M 2219/044 (2013.01); C10M 2223/049 (2013.01); C10M 2227/061 (2013.01); C10N 2030/02 (2013.01); C10N 2030/04 (2013.01); C10N 2030/041 (2020.05); C10N 2030/10 (2013.01); C10N 2030/14 (2013.01); C10N 2030/42 (2020.05); C10N 2040/04 (2013.01); C10N 2040/25 (2013.01); C10N 2040/40 (2020.05); C10N 2070/00 (2013.01);
Abstract

A lubricating oil composition including: a lubricant base oil; (A) a calcium salicylate detergent in an amount of 0.005 to 0.03 mass % in terms of calcium on the basis of the total mass of the composition; (B) a succinimide ashless dispersant in an amount of 0.005 to 0.25 mass % in terms of nitrogen on the basis of the total mass of the composition; (C) a nitrogen-containing antioxidant in an amount of 0.005 to 0.15 mass % in terms of nitrogen on the basis of the total mass of the composition; and optionally (D) a nitrogen-containing friction modifier in an amount of no more than 0.03 mass % in terms of nitrogen on the basis of the total mass of the composition, wherein a total content of any metallic detergent is 0.005 to 0.03 mass % in terms of metal on the basis of the total mass of the composition.

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