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.

Date of Patent:
Mar. 10, 2026

Filed:

Apr. 17, 2023
Applicant:

Idemitsu Kosan Co., Ltd., Tokyo, JP;

Inventors:

Toshiaki Iwai, Tokyo, JP;

Masato Yokomizo, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10M 101/02 (2006.01); C10M 135/36 (2006.01); C10M 137/04 (2006.01); C10M 137/10 (2006.01); C10M 141/10 (2006.01); C10N 30/00 (2006.01); C10N 30/02 (2006.01); C10N 40/04 (2006.01);
U.S. Cl.
CPC ...
C10M 169/04 (2013.01); C10M 101/02 (2013.01); C10M 135/36 (2013.01); C10M 137/04 (2013.01); C10M 137/105 (2013.01); C10M 141/10 (2013.01); C10M 2203/1006 (2013.01); C10M 2219/106 (2013.01); C10M 2223/041 (2013.01); C10M 2223/047 (2013.01); C10N 2030/02 (2013.01); C10N 2030/42 (2020.05); C10N 2030/43 (2020.05); C10N 2040/04 (2013.01);
Abstract

Provided are a lubricating oil composition including: a base oil (A); a sulfur-based extreme pressure agent (B); and a phosphorus-based extreme pressure agent (C), wherein the sulfur-based extreme pressure agent (B) is a thiadiazole having a branched organic group having 3 or more and 24 or less carbon atoms, and wherein the phosphorus-based extreme pressure agent (C) is a phosphate ester having a ring structure-containing organic group having 6 or more and 24 or less carbon atoms, a lubrication method including using the composition, and a transmission including the composition.


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Iwai, Toshiaki. (2026). Lubricating oil composition, lubrication method, and transmission (U.S. Patent No. 12570920). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12570920

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