Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4443321 | Supercritical solvent coal extraction | — | 1984-04-17 | |
| 4321465 | Infrared assay of kerogen in oil shale | Carole S. Stover | 1982-03-23 | $5,812,000 |
| 4274934 | Process for removing nitrogen from shale oil using pyrrole polymerization | — | 1981-06-23 | $5,517,000 |
| 4272361 | Method for reducing the nitrogen content of shale oil | — | 1981-06-09 | $7,970,000 |
| 4271009 | Method for reducing the nitrogen content of shale oil | Carole S. Stover, Eugene G. Youngerman | 1981-06-02 | $7,751,000 |
| 4268378 | Method for removing nitrogen from shale oil by hydrogenation and liquid sulfur dioxide extraction | — | 1981-05-19 | $8,968,000 |
| 4218309 | Removal of sulfur from shale oil | — | 1980-08-19 | $7,979,000 |
| 4181177 | Controlling shale oil pour point | — | 1980-01-01 |