Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831166 | Preparation of alpha-substituted upsilon-butyrolactones | Heinz Eckhardt, Walter Gramlich, Klaus Halbritter | 1989-05-16 |
| 4804758 | Preparation of 1,4-diazabicyclo[2.2.2]octanes | Wolfgang Hoelderich, Kurt Schneider | 1989-02-14 |