Issued Patents All Time
Showing 76–81 of 81 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4486293 | Catalytic coal hydroliquefaction process | — | 1984-12-04 |
| 4472263 | Process for solvent refining of coal using a denitrogenated and dephenolated solvent | Edwin N. Givens, Frank K. Schweighardt | 1984-09-18 |
| 4465587 | Process for the hydroliquefaction of heavy hydrocarbon oils and residua | Robert N. Miller | 1984-08-14 |
| 4441983 | Zinc sulfide liquefaction catalyst | — | 1984-04-10 |
| 4411766 | Iron catalyzed coal liquefaction process | Edwin N. Givens | 1983-10-25 |
| 4411767 | Integrated process for the solvent refining of coal | — | 1983-10-25 |