Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4631090 | Preparation and use of iron magnetic pigments | Rolf Naumann, Lutz Leitner, Jakob Rademachers | 1986-12-23 |
| 4470844 | Agglomerated ferromagnetic iron particles | Jakob Rademachers, Rolf Naumann, Hans-Peter Biermann, Wolfgang Rambold | 1984-09-11 |
| 4400432 | Coating iron oxide particles for magnetic recording | Ingo Pflugmacher, Franz Hund, Volker Hahnkamm, Peter Woditsch | 1983-08-23 |
| 4369265 | Readily dispersible silicone-coated finely divided solids | Ottfried Schlak, Franz Hund, Lutz Leitner | 1983-01-18 |
| 4323596 | Coating iron oxide particles for magnetic recording | Ingo Pflugmacher, Franz Hund, Volker Hahnkamm, Peter Woditsch | 1982-04-06 |
| 4297395 | Production of cobalt-doped ferrimagnetic iron oxides | Heinrich-Christian Schopper, Lutz Leitner, Volker Hahnkamm | 1981-10-27 |
| 4290799 | Ferromagnetic metal pigment essentially consisting of iron and a process for its production | Gerhard Schroeder, Franz Hund, Heinrich-Christian Schopper, Rolf Naumann | 1981-09-22 |
| 4264462 | Stabilization of magnetite pigments with heterocyclic nitrogen compounds | Bernd Stephan, Franz Hund, Gerhard Schroeder | 1981-04-28 |