Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851584 | Preparation of carbonyl compounds | Fritz Graf, Leopold Hupfer | 1989-07-25 |
| 4816606 | Continuous preparation of aldehydes and ketones | Karl Brenner, Manfred Eggersdorfer, Wilhelm Ruppel, Hans-Ulrich Scholz | 1989-03-28 |
| 4814513 | Preparation of carbonyl compounds | Fritz Graf, Heinz Engelbach, Leopold Hupfer, Michael Jolyon Sprague | 1989-03-21 |