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:
Oct. 31, 2023
Filed:
Feb. 27, 2020
Applicant:
Idemitsu Kosan Co., Ltd., Chiyoda-ku, JP;
Inventor:
Akihiro Shishikura, Chiba, JP;
Assignee:
IDEMITSU KOSAN CO., LTD., Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
C10M 115/08 (2006.01); C10M 169/02 (2006.01); C10M 169/04 (2006.01); C10N 20/02 (2006.01); C10N 20/06 (2006.01); C10N 30/04 (2006.01); C10N 30/06 (2006.01); C10N 30/10 (2006.01); C10N 30/12 (2006.01); C10N 30/14 (2006.01); C10N 40/04 (2006.01); C10N 50/10 (2006.01); C10N 70/00 (2006.01);
U.S. Cl.
CPC ...
C10M 115/08 (2013.01); C10M 169/02 (2013.01); C10M 169/04 (2013.01); C10M 2207/125 (2013.01); C10M 2215/064 (2013.01); C10M 2215/1026 (2013.01); C10M 2217/0456 (2013.01); C10M 2219/024 (2013.01); C10M 2219/044 (2013.01); C10M 2219/068 (2013.01); C10N 2020/02 (2013.01); C10N 2020/06 (2013.01); C10N 2030/04 (2013.01); C10N 2030/06 (2013.01); C10N 2030/10 (2013.01); C10N 2030/12 (2013.01); C10N 2030/14 (2013.01); C10N 2040/04 (2013.01); C10N 2050/10 (2013.01); C10N 2070/00 (2013.01);
Abstract
A grease composition may be used for speed reducers and speed increasers, being excellent in both torque transmission efficiency and leak prevention performance. The grease composition may contain a base oil (A) and a urea-based thickener (B), which is used for speed reducers and speed increasers, wherein the particles containing the urea-based thickener (B) in the grease composition satisfy the following requirement (I). Requirement (I): the area-based arithmetic average particle diameter of the particles is 2.0 μm or less, as measured by a laser diffraction/scattering method.