Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10479893 | Preparation of iron (III) oxide pigment | Waldemar Czaplik, Jurgen Kischkewitz | 2019-11-19 |
| 9428402 | Method for producing finely divided haematite and for producing iron oxide red pigments | Udo Holtmann, Juergen Kischkewitz | 2016-08-30 |