Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5106980 | Preparation of quinophthalones | Guido Kuth | 1992-04-21 |
| 5028705 | Preparation of pyrazolo[5,1-b]quinazolones | Hartmut Kanter | 1991-07-02 |
| 4925946 | Preparation of pyrazolo(5,1-B)quinazolones | Hartmut Kanter | 1990-05-15 |
| 4897478 | Preparation of haloisatoic anhydrides | Hartmut Kanter, Heinrich Kowarsch | 1990-01-30 |