Patent · US Active

Method for inspecting lubricating oil composition and method for producing lubricating oil composition

US11220652B2 · kind B2 · utility

0Cited by

1References

8Claims

0Family size

Assignee

Showa Denko K.K. · JP

Inventors

Ryuji Monden · Tokyo, JP
Yu Gao · Providence, US
Masumi Kuritani · Tokyo, JP
Kunio Kondo · Sanda, JP

Key dates

Filing date	Dec 4, 2018
Grant date	Jan 11, 2022
Priority date	—
Expiry date	Dec 4, 2038

Classification

Technology area (CPC G)Physics
CPC primaryG01N2015/0222
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for inspecting a lubricant oil composition containing a base oil and a fullerene, the method including: measuring at least one of a lamellar length of the lubricating oil composition and a most abundant diameter in a particle size distribution obtained by a dynamic light scattering method, and selecting the lubricating oil composition whose measured value is within a set range.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.