|
| US3941679 | 12 Abr 1974 | 2 Mar 1976 | OTISCA Industries Ltd. | Separation of hydrocarbonaceous substances from mineral solids |
| US4029568 | 26 Sep 1975 | 14 Jun 1977 | Minerals Research Corporation | Method of recovery of oil and bitumen from oil-sands and oil shale |
| US4046668 | 12 Ene 1976 | 6 Sep 1977 | Mobil Oil Corporation | Double solvent extraction of organic constituents from tar sands |
| US4046669 | 19 Ene 1976 | 6 Sep 1977 | | Solvent extraction of oil from tar sands utilizing a trichloroethylene solvent |
| US4096057 | 10 May 1976 | 20 Jun 1978 | New Energy Sources Company | Apparatus and method for recovery of bituminous products from tar sands |
| US4486294 | 17 Oct 1983 | 4 Dic 1984 | University of Utah | Process for separating high viscosity bitumen from tar sands |
| US5316664 | 23 Oct 1992 | 31 May 1994 | Canadian Occidental Petroleum, Ltd. | Process for recovery of hydrocarbons and rejection of sand |
| US5340467 | 24 Oct 1991 | 23 Ago 1994 | Canadian Occidental Petroleum Ltd. | Process for recovery of hydrocarbons and rejection of sand |
| US7677397 | 25 Jul 2005 | 16 Mar 2010 | Suncor Energy Inc. | Sizing roller screen ore processing apparatus |
| US7726491 | 19 May 2008 | 1 Jun 2010 | Suncor Energy Inc. | Bituminous froth hydrocarbon cyclone |
| US7736501 | 6 Jun 2007 | 15 Jun 2010 | Suncor Energy Inc. | System and process for concentrating hydrocarbons in a bitumen feed |
| US8136672 | 23 Dic 2009 | 20 Mar 2012 | Suncor Energy, Inc. | Sizing roller screen ore processing apparatus |