Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11634342 | Iron oxide pigments containing Al | Kai BUETJE, Christine Kathrein, Carsten Rosenhahn, Ulrich Meisen, Peter Koehler | 2023-04-25 |
| 10221326 | Production of red iron oxide pigment | Waldemar Czaplik, Wolfgang Oehlert, Huajun Li | 2019-03-05 |
| 9428402 | Method for producing finely divided haematite and for producing iron oxide red pigments | Guido Ketteler, Udo Holtmann | 2016-08-30 |