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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 11535808 B1

PDFFull Text
Date of Patent:
Dec. 27, 2022

Filed:

Oct. 21, 2019

Lubricating oil composition

Applicant:

Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;

Inventor:

Kazushi Tamura, Chiba, JP;

Assignee:

Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Prem C Singh

Assistant Examiner:

Francis C Campanell

Int. Cl.
CPC ...
C10M 135/18 (2006.01); C10M 169/00 (2006.01); C10M 169/04 (2006.01); H01M 10/613 (2014.01); H01M 10/6567 (2014.01); C09K 5/20 (2006.01); C10M 135/10 (2006.01); C10M 135/36 (2006.01); C10M 137/04 (2006.01); C10M 137/08 (2006.01); C10M 141/10 (2006.01); C10N 30/00 (2006.01); C10N 10/04 (2006.01); C10N 30/02 (2006.01); C10N 40/04 (2006.01); C10N 40/08 (2006.01);
U.S. Cl.
CPC ...
C10M 169/04 (2013.01); C09K 5/20 (2013.01); C10M 135/10 (2013.01); C10M 135/36 (2013.01); C10M 137/04 (2013.01); C10M 137/08 (2013.01); C10M 141/10 (2013.01); H01M 10/613 (2015.04); H01M 10/6567 (2015.04); C10M 2203/003 (2013.01); C10M 2219/044 (2013.01); C10M 2219/046 (2013.01); C10M 2219/106 (2013.01); C10M 2223/04 (2013.01); C10M 2223/041 (2013.01); C10M 2223/043 (2013.01); C10M 2223/049 (2013.01); C10N 2010/04 (2013.01); C10N 2030/02 (2013.01); C10N 2030/42 (2020.05); C10N 2030/43 (2020.05); C10N 2040/04 (2013.01); C10N 2040/08 (2013.01);
Abstract

A lubricating oil composition may include a base oil (A), a neutral phosphorus compound (B), an acidic phosphorus compound (C), a sulfur compound (D) and a metal salt (E) including a metal sulfonate, a metal salicylate, and/or a metal phenate, in which a content of the acidic phosphorus compound (C) in terms of phosphorus atoms is 10 to 180 ppm by mass based on the total amount of the lubricating oil composition, a content of the sulfur compound (D) in terms of sulfur atoms is 10 to 1000 ppm by mass based on the total amount of the lubricating oil composition, and a content of the metal salt (E) in terms of metal atoms is 5 to 180 ppm by mass based on the total amount of the lubricating oil composition.

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