Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7267776 | Foams for removing pollutants and/or heavy metals from flowable media | Bernd Wurth, Bernd Lehmann, Klaus-Dieter Novak, Andreas Schlegel | 2007-09-11 |
| 5948722 | Method for producing iron-based catalysts | Malvina Farcasiu, Phillip B. Kaufman, J. Rodney Diehl | 1999-09-07 |
| 5480570 | Low coercive iron oxide pigments and a process for their preparation | Karl-Heinz van Bonn, Gerhard Franz | 1996-01-02 |
| 5116419 | Process for the preparation of magnetic iron oxides and the pigments obtained therefrom | Peter Kiemle | 1992-05-26 |
| 4933014 | Magnetic iron oxide pigments and a process for their preparation | Peter Kiemle, Fritz Rodi, Aloys Eiling | 1990-06-12 |
| 4923519 | Magnetic iron oxide pigments and a process for their preparation | Fritz Rodi, Peter Kiemle, Aloys Eiling | 1990-05-08 |