Issued Patents 1982
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4358359 | Two-stage coal liquefaction process with process-derived solvent having a low heptane-insolubles content | Joel W. Rosenthal, Arthur J. Dahlberg | 1982-11-09 |
| 4350582 | Two-stage coal liquefaction process with process-derived solvent | Joel W. Rosenthal, Arthur J. Dahlberg | 1982-09-21 |
| 4331531 | Three-stage coal liquefaction process | — | 1982-05-25 |
| 4325800 | Two-stage coal liquefaction process with interstage guard bed | Joel W. Rosenthal | 1982-04-20 |
| 4325801 | Three-stage coal liquefaction process | — | 1982-04-20 |