Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5087744 | Preparation of methacrylic acid | Richard Krabetz, Gerd Duembgen, Franz Merger, Fritz Thiessen, Herbert Vogal | 1992-02-11 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5087744 | Preparation of methacrylic acid | Richard Krabetz, Gerd Duembgen, Franz Merger, Fritz Thiessen, Herbert Vogal | 1992-02-11 |