Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4522710 | Method for increasing deasphalted oil production | Biddanda U. Achia, David H. Shaw | 1985-06-11 |
| 4511537 | Extraction zone | Robert J. Fiocco | 1985-04-16 |
| 4426361 | Extraction zone tray | — | 1984-01-17 |
| 4208382 | Removing H.sub.2 S from gas with recycled NMP extraction solvent | John H. Blume, Milton D. Leighton | 1980-06-17 |