Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881960 | Fractionation of a hydrocarbon mixture | Elmar Diehl | 1989-11-21 |
| 4810267 | Scrubbing of gas to recover light hydrocarbons | Heiner Landeck | 1989-03-07 |
| 4797140 | Scrubbing of gas to recover light hydrocarbons | Heiner Landeck | 1989-01-10 |