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:
Feb. 07, 2023
Filed:
Oct. 25, 2019
Applicant:
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Inventor:
Kazushi Tamura, Chiba, JP;
Assignee:
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10M 143/00 (2006.01); C10M 145/14 (2006.01); C10M 157/10 (2006.01); C10N 40/04 (2006.01); C10N 20/02 (2006.01); C10N 30/02 (2006.01); C10N 40/08 (2006.01);
U.S. Cl.
CPC ...
C10M 169/041 (2013.01); C10M 143/00 (2013.01); C10M 145/14 (2013.01); C10M 157/10 (2013.01); C10M 2205/022 (2013.01); C10M 2209/084 (2013.01); C10N 2020/02 (2013.01); C10N 2030/02 (2013.01); C10N 2040/042 (2020.05); C10N 2040/08 (2013.01);
Abstract
A lubricating oil composition may include a base oil (A), an olefin copolymer (B), and a poly(alkyl(meth)acrylate) (C), in which a weight average molecular weight of the olefin copolymer (B) is 10,000 to 80,000, a content of the olefin copolymer (B) is 0.01% to 0.23% by mass based on the total amount of the lubricating oil composition, and a content of the poly(alkyl(meth)acrylate) (C) is 0.02% to 0.40% by mass based on the total amount of the lubricating oil composition.