Lubricating oil compositions
US7018958B2 · kind B2 · utility
20Cited by
10References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 22, 2002 |
| Grant date | Mar 28, 2006 |
| Priority date | — |
| Expiry date | May 25, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lubricating oil composition having a total base number of at least about 8, comprising a major amount of oil of lubricating viscosity; an amount of one or more dihydrocarbyl dithiophosphate metal salt introducing into the lubricating oil composition no more than 0.06 wt. % of phosphorus; at least 1.2 wt. % of hindered phenol antioxidant; and boron, and/or a boron-containing compound or compounds in an amount providing the lubricating oil composition with at least 200 ppm by weight of boron, all weight percentages being based on the total weight of the lubricating oil composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.