Lubricating compositions
US4801390A · kind A · utility
12Cited by
12References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 1985 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | May 28, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Lubricating compositions particularly for crankcase lubrication of gasoline and diesel engines in automobiles and trucks have improved viscometric properties by the incorporation of an ashless dispersant and a dispersant viscosity improver with increased boron content of at least 0.02 wt. % of the composition, preferably in the form of an ashless dispersant borated to a higher level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.