Lubricating compositions
US5731273A · kind A · utility
6Cited by
9References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1996 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Nov 13, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Crankcase lubricant compositions for use in automobile or truck engines comprise a major proportion of a lubricating oil, and an antioxidant system comprising added copper present in oil-soluble form and at least one oil-soluble phenothiazine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.