Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885395 | Preparation of alpha, beta-unsaturated ketones | Wolfgang Hoelderich, Leopold Hupfer | 1989-12-05 |
| 4874899 | Preparation of unsaturated and saturated ketones | Wolfgang Hoelderich, Leopold Hupfer | 1989-10-17 |
| 4866210 | Preparation of ketones | Wolfgang Hoelderich, Leopold Hupfer | 1989-09-12 |
| 4804758 | Preparation of 1,4-diazabicyclo[2.2.2]octanes | Wolfgang Hoelderich, Walter F. Best | 1989-02-14 |