Method and means for processing oil sands while excavating
US7448692B2 · kind B2 · utility
18Cited by
56References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2004 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Apr 11, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/13
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention is directed to the separation of bitumen, such as by the Clark process or by a countercurrent de-sander, in an underground excavation machine, such as a tunnel boring machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.