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:
Mar. 21, 2017
Filed:
Mar. 25, 2014
Jx Nippon Oil & Energy Corporation, Chiyoda-ku, Tokyo, JP;
JX NIPPON OIL & ENERGY CORPORATION, Chiyoda-Ku, JP;
Abstract
The present invention provides a hydraulic oil composition comprising: a lubricating base oil having a kinematic viscosity at 40° C. of 15 to 50 mm/s; and 1 to 40% by mass, based on a total amount of the hydraulic oil composition, of a polymethacrylate having a number-average molecular weight of 48000 or lower, the hydraulic oil composition having a viscosity index of 150 or higher, and a ratio (A/B) at 60 to 80° C. of (A) a kinematic viscosity (unit: mm/s) to (B) a shear viscosity (unit: mPa·s, shear condition: 10/s) of 1.3 or lower.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile