Patents per Year
Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4495058 | Process for generating superheated steam using retorted solids | Robert A. Farnham, Lawrence Paul Zestar | 1985-01-22 | $6,955,000 |
| 4479308 | Process and device for recovering heat from a particulate solid | — | 1984-10-30 | $19,806,000 |
| 4402823 | Supplemental pyrolysis and fines removal in a process for pyrolyzing a hydrocarbon-containing solid | — | 1983-09-06 | $21,737,000 |
| 4389950 | Process for burning retorted oil shale and improved combustor | — | 1983-06-28 | $52,802,000 |
| 4366046 | Size separation of oil shale particles for efficient retorting | Gene M. Handel | 1982-12-28 | $20,217,000 |
| 4336126 | Process for burning retorted oil shale and improved combustor | — | 1982-06-22 | $8,532,000 |
| 4336127 | Staged burning of retorted carbon-containing solids | — | 1982-06-22 | $8,532,000 |
| 4230557 | Removal of entrained solids from retorted hydrocarbonaceous vapors | Byron G. Spars | 1980-10-28 | $28,942,000 |