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:
Aug. 05, 2025
Filed:
Mar. 31, 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 169/02 (2006.01); C10M 115/08 (2006.01); C10M 143/04 (2006.01); C10M 169/06 (2006.01); C10M 171/06 (2006.01); C10N 20/02 (2006.01); C10N 20/04 (2006.01); C10N 40/04 (2006.01);
U.S. Cl.
CPC ...
C10M 169/02 (2013.01); C10M 115/08 (2013.01); C10M 143/04 (2013.01); C10M 169/06 (2013.01); C10M 171/06 (2013.01); C10M 2205/024 (2013.01); C10M 2215/28 (2013.01); C10M 2290/10 (2013.01); C10N 2020/02 (2013.01); C10N 2020/04 (2013.01); C10N 2040/04 (2013.01);
Abstract
A grease composition, containing a base oil (A), a urea-based thickener (B), and a polymer compound (C). The particles that make up the urea-based thickener (B) in the grease composition satisfy the following requirement (I): the particles have an arithmetic average particle diameter on an area basis as measured by a laser diffraction/scattering method of 2.0 μm or less, and the polymer compound (C) has a number average molecular weight (Mn) of 30,000 or more and a molecular weight distribution (Mw/Mn) of 2.20 or less.