Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4550208 | Preparation of 4,4'-diaminobenzophenones | Walter Disteldorf, Rolf-Dieter Kohler | 1985-10-29 |
| 4207255 | Manufacture of very pure halonaphthalic acid anhydrides | Walter Disteldorf, Albert Hettche | 1980-06-10 |