Lubricating oil compositions
US6869919B2 · kind B2 · utility
11Cited by
14References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2002 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Jan 25, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Soot induced kinematic viscosity increase of lubricating oil compositions for diesel engines equipped with EGR systems can be ameliorated by selection of viscosity modifier, lubricating oil flow improvers, detergents and/or dispersants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.