Method for processing used oils
US11078440B2 · kind B2 · utility
0Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2017 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Dec 15, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2203/1045
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a method for lowering the content of polycyclic aromatic hydrocarbons (PAH) in a used lubricant composition, in which said used lubricant composition passes over activated carbon, said method not comprising a solvent extraction step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.