Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4441759 | In situ oil shale retort system | Ned M. Hutchins, Rudolf Kvapil, Thomas E. Ricketts | 1984-04-10 |
| 4423906 | Method of forming an in situ oil shale retort | — | 1984-01-03 |
| 4296968 | In situ oil shale retort having horizontally offset pillars | Thomas E. Ricketts, Ned M. Hutchins | 1981-10-27 |
| 4272127 | Subsidence control at boundaries of an in situ oil shale retort development region | Ned M. Hutchins | 1981-06-09 |
| 4194789 | Staggered array of explosives for fragmented oil shale formation toward a vertical free face | Ned M. Hutchins | 1980-03-25 |
| 4192553 | Method for attenuating seismic shock from detonating explosive in an in situ oil shale retort | Richard Hefelfinger | 1980-03-11 |