|
| US4415430 | 21 Jul 1981 | 15 Nov 1983 | Standard Oil Company (Indiana) | Two-stage centrifugal dedusting process |
| US4536279 | 19 Ene 1984 | 20 Ago 1985 | Mobil Oil Corporation | Enhanced recovery of hydrocarbonaceous fluids from oil shale |
| US4690732 | 20 Mar 1986 | 1 Sep 1987 | Combs Enterprises, Inc. | Apparatus for shale oil retorting |
| US4698149 | 7 Nov 1983 | 6 Oct 1987 | Mobil Oil Corporation | Enhanced recovery of hydrocarbonaceous fluids oil shale |
| US5372708 | 13 Ene 1993 | 13 Dic 1994 | A.F.S.K. Electrical & Control Engineering Ltd. | Method for the exploitation of oil shales |
| US7669349 | 4 Mar 2005 | 2 Mar 2010 | TD*X Associates LP | Method separating volatile components from feed material |
| US8020313 | 4 Feb 2010 | 20 Sep 2011 | TD*X Associates LP | Method and apparatus for separating volatile components from feed material |