IP Library › Granted Patent US 12,742,129
Granted Patent B2
US 12,742,129 · App. 18/995,710 · Granted Sep 22, 2026

Grease composition

Inventor: Makoto Hayama (Fujisawa, JP)
Assignee: KYODO YUSHI CO., LTD.
C10M137/04C10M169/06C10M2207/1285C10M2223/04C10M2223/041C10M2223/042C10M2223/043C10N2030/06C10N2050/10
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Quick Facts
Patent No.
US 12,742,129
App. No.
18/995,710
Granted
Sep 22, 2026
Kind
B2
Abstract

A grease composition includes (a) a compound having a phosphate ester moiety, (b) a base oil, and (c) a thickener. The last non-seizure load measured in accordance with ASTM D-2596 is 980 N or more.

Claims (8)

1 . A grease composition comprising:

(a) a compound having a phosphate ester moiety,

(b) a base oil; and

(c) a thickener,

wherein the last non-seizure load measured in accordance with ASTM D-2596 is 980 N or more, and

component (a) is at least one coupling agent (a2) having a phosphate ester moiety within the molecule, selected from the group consisting of (a2-1) silane coupling agents, and (a2-4) zirconate coupling agents.

2 . The grease composition according to claim 1 , containing component (a) at 0.1 to 20% by mass based on a total mass of the composition.

3 . The grease composition according to claim 1 , wherein the content of component (a) is 0.1 to 15% by mass based on the total mass of the composition.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 21, 2025
From: HAYAMA, MAKOTO
To: KYODO YUSHI CO., LTD.
Reel/Frame 069941/0907 →
Priority Claims (1)
JP 2022-142079 · Sep 7, 2022 · national
Continuity (1)
Related Publication 20250215347A1 · Jul 3, 2025
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