Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851584 | Preparation of carbonyl compounds | Leopold Hupfer, Harald Schultheiss | 1989-07-25 |
| 4814513 | Preparation of carbonyl compounds | Heinz Engelbach, Leopold Hupfer, Harald Schultheiss, Michael Jolyon Sprague | 1989-03-21 |