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:
May. 28, 2013
Filed:
Mar. 30, 2009
Hitoshi Komatsubara, Yokohama, JP;
Hitoshi Komatsubara, Yokohama, JP;
JX Nippon Oil & Energy Corporation, Tokyo, JP;
Abstract
The present invention provides a lubricating oil composition that is excellent in anti-fatigue properties for metals and load bearing properties while having improved fuel efficiency. The lubricating oil composition comprises (A) one type or a mixture of two or more types of mineral base oil having a 40° C. kinematic viscosity of from 5 to 15 mm/s; and (B) one type or a mixture of two or more types of ester-based base oil having a 40° C. kinematic viscosity of from 3 to 25 mm/s and a 0° C. kinematic viscosity of from 10 to 130 mm/s, the 40° C. kinematic viscosity of the mixed base oil of (A) and (B) being 18 mm/s or lower, the blend ratio of the ester-based base oil being from 0.58 to 80 percent by mass, and the 40° C. kinematic viscosity of the composition being from 4 to 23 mm/s.