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:
Dec. 20, 2018
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Go Watanabe, Chiba, JP;
IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;
Abstract
Provided is a grease composition which contains (A) a mixed base oil containing (A1) a low-viscosity base oil having a kinematic viscosity at 40° C. of 10 to 50 mm/s and (A2) a high-viscosity base oil having a kinematic viscosity at 40° C. of 200 to 700 mm/s, (B) a lithium-based thickener and (C) a polymer having a kinematic viscosity at 100° C. of 1,000 to 100,000 mm/s, and has an apparent viscosity at −10° C., as measured according to JIS K2220:2013 and at a shear rate of 10 s, of 50 to 250 mPa·s. The grease composition is excellent in pumpability and is also excellent in wear resistance under poor lubrication conditions.