Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368640 | Transparent iron oxide pigments, processes for their production and their use | Ulrike Pitzer, Klaus Lerch | 1994-11-29 |
| 5300146 | Thermostable iron oxide pigments, processes for their production, as well as their use | Friedrich Jonas, Andreas Frankenau | 1994-04-05 |