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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 10407642 B1

PDFFull Text
Date of Patent:
Sep. 10, 2019

Filed:

Mar. 29, 2016

Lubricant composition

Applicant:

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

Inventors:

Masato Yokomizo, Narashino, JP;

Keiichi Narita, Chiba, JP;

Assignee:

IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;

Attorney:

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

Primary Examiner:

Ellen M McAvoy

Int. Cl.
CPC ...
C10M 133/04 (2006.01); C10M 169/04 (2006.01); C10M 137/02 (2006.01); C10M 137/04 (2006.01); C10M 163/00 (2006.01); C10M 133/06 (2006.01); C10M 101/00 (2006.01); C10M 139/00 (2006.01); C10M 141/12 (2006.01);
U.S. Cl.
CPC ...
C10M 169/04 (2013.01); C10M 101/00 (2013.01); C10M 133/06 (2013.01); C10M 137/02 (2013.01); C10M 137/04 (2013.01); C10M 139/00 (2013.01); C10M 141/12 (2013.01); C10M 163/00 (2013.01); C10M 2203/003 (2013.01); C10M 2203/1006 (2013.01); C10M 2205/0285 (2013.01); C10M 2207/028 (2013.01); C10M 2207/262 (2013.01); C10M 2207/289 (2013.01); C10M 2209/084 (2013.01); C10M 2215/04 (2013.01); C10M 2215/26 (2013.01); C10M 2215/28 (2013.01); C10M 2219/046 (2013.01); C10M 2219/106 (2013.01); C10M 2223/04 (2013.01); C10M 2223/041 (2013.01); C10M 2223/049 (2013.01); C10M 2227/06 (2013.01); C10N 2220/021 (2013.01); C10N 2230/02 (2013.01); C10N 2230/04 (2013.01); C10N 2230/06 (2013.01); C10N 2230/08 (2013.01); C10N 2230/42 (2013.01); C10N 2230/76 (2013.01); C10N 2240/045 (2013.01);
Abstract

The present invention relates to a lubricating oil composition prepared by blending (A) a tertiary amine having a specific structure, (B) a metal-based detergent having a total base number according to a perchloric acid method of 50 mgKOH/g or less, (C) a metal-based detergent having a total base number according to a perchloric acid method of 150 mgKOH/g or more, (D) at least one selected from an acidic phosphate and an acidic phosphite, and (E) a lubricating base oil, which satisfies a requirement (X): the mass ratio of the metal fraction derived from the component (B) to the metal fraction derived from the component (C) (B/C) is 0.60 or less.

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