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:
Sep. 30, 2025
Filed:
Apr. 19, 2022
Applicant:
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Inventors:
Assignee:
IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M 169/04 (2006.01); C10M 107/10 (2006.01); C10M 129/76 (2006.01); C10N 20/04 (2006.01); C10N 30/00 (2006.01); C10N 30/02 (2006.01); C10N 30/10 (2006.01);
U.S. Cl.
CPC ...
C10M 169/04 (2013.01); C10M 107/10 (2013.01); C10M 129/76 (2013.01); C10M 2207/285 (2013.01); C10N 2020/04 (2013.01); C10N 2030/02 (2013.01); C10N 2030/10 (2013.01); C10N 2030/74 (2020.05);
Abstract
A lubricating oil composition containing a poly-α-olefin and an antioxidant, in which an evaporation loss by the Noack method is 4.9% by mass or less, a kinematic viscosity at 100° C. is 6.5 mm/sec or less, and an amount of the antioxidant with respect to the poly-α-olefin is 0.05% by mass or more.