Low and light ash oils
US5346635A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Jun 3, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Phosphorus-free, low ash and light ash motor oils containing no metal DTP's, halogens or hazardous substances are disclosed. The phosphorus-free, low ash formulations may be prepared either as a lubricating oil or as a concentrated additive for a lubricating oil. Additionally, light ash motor oils containing no metal DTP, halogens or hazardous substances are disclosed. The light ash formulations may be prepared either as a lubricating oil or as a concentrated additive for a lubricating oil. The use of both the oils and the concentrated additives results in superior price and performance qualities compared to the leading commercial brands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.