Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4604019 | System for removing solids from a solids upflow vessel | — | 1986-08-05 |
| 4564437 | Process for retorting oil shale with fluidized retorting of shale fines | — | 1986-01-14 |
| 4556458 | Apparatus for cooling, depressurizing, and moisturizing retorted oil shale | John E. Hines, Roland O. Dhondt | 1985-12-03 |
| 4551206 | Apparatus with moving bed pressure letdown stage for recovering retorted oil shale | John H. Duir | 1985-11-05 |
| 4530752 | Oil shale retorting process | Hugh W. Gowdy, Arnold E. Kelley | 1985-07-23 |
| 4523979 | Apparatus for recovery of retorted shale from an oil shale retorting process | John H. Duir | 1985-06-18 |
| 4515679 | Process for retorting oil shale with fluidized retorting of shale fines | — | 1985-05-07 |
| 4461673 | Process for cooling, depressurizing, and moisturizing retorted oil shale | Roland O. Dhondt, John E. Hines | 1984-07-24 |
| 4448668 | Process for retorting oil shale with maximum heat recovery | — | 1984-05-15 |
| 4446001 | Recovery of retorted shale from an oil shale retorting process | John H. Duir | 1984-05-01 |
| 4435271 | Oil shale retorting process with a moving bed pressure letdown stage | John H. Duir | 1984-03-06 |