Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5644060 | Process for the preparation of 1-oxa-3,8-diaza-4-oxospiro[4.5]decane compounds | — | 1997-07-01 |
| 5594142 | Process for the preparation of polyalkyl-1-oxa-diazaspirodecane compounds | Karl Gaa, G unter Nowy | 1997-01-14 |