Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5068335 | Process for the preparation of 4-hydroxy-2,2,6,6-tetramethylpiperidine | Rudolf Maul, Siegfried Kintopf | 1991-11-26 |
| 4230867 | Process for the production of 2-aryl-2H-benzotriazoles | Siegfried Kintopf | 1980-10-28 |