Issued Patents All Time
Showing 25 most recent of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6936340 | Magnetic recording medium | Albert Kohl, Peter Heilmann, Ronald J. Veitch, Ria Kress, Stefan Müller +2 more | 2005-08-30 |
| 6835450 | Magnetic recording medium | Ronald J. Veitch, Albert Kohl, Andreas Ilmer, Peter Heilmann, Ria Kress +2 more | 2004-12-28 |
| 6235368 | Magnetic recording medium having a high recording density and its production | Hans-Bertram Wiegemann, Peter Stehle, Hansjorg Traub | 2001-05-22 |
| 6231963 | Magnetic recording media | August Lehner, Volker Koch, Manfred Ohlinger, Albert Kohl, Werner Lenz +7 more | 2001-05-15 |
| 6040041 | Magnetic recording medium | Klaus-Dieter Götz, Werner Loch, Erich Hoffmann, Hans-Georg Gottmann, Hans-Joachim Jenor +1 more | 2000-03-21 |
| 5569409 | Finely divided acicular magnetic modified chromium dioxide | Harald Jachow, Reinhard K orner, Ronald J. Veitch, Ekkehard Schwab, Bernd H oppner +2 more | 1996-10-29 |
| 5490476 | Temperature indicator for deep-frozen products | Ronald J. Veitch, Peter Heilmann | 1996-02-13 |
| 5378383 | Process for preparing modified chromium dioxide | Harald Jachow, Ekkehard Schwab, Reinhard Koerner, Norbert Mueller, Rudi Lehnert +4 more | 1995-01-03 |
| 5153022 | Stochastic orientation of magnetic recording media | Ronald J. Veitch, Gerhard Soehring, Volker Koch | 1992-10-06 |
| 5050015 | Method and arrangement for reducing wear in a magnetic storage means | Joachim Hack, Werner Grau, Werner Sickmueller, Heinrich Mannsperger | 1991-09-17 |
| 5047161 | Preparation of isometric cobalt- and titanium-containing magnetic iron oxides | Werner Steck, Hartmut Hibst | 1991-09-10 |
| 5009877 | Stabilization of acicular ferromagnetic chromium dioxide | Werner Steck, Laszlo Marosi, Herbert Haberkorn, Rainer Feser, Werner Huebner | 1991-04-23 |
| 5006406 | Magnetic recording media | Jenoe Kovacs, Milena Melzer, Werner Balz, Werner Lenz, Werner Loch | 1991-04-09 |
| 4933004 | Preparation of acicular ferromagnetic metal particles of substantially iron | Klaus-Dieter Hoppe, Werner Steck, Jenoe Kovacs, Rainer Feser | 1990-06-12 |
| 4826671 | Preparation of acicular .alpha.-Fe.sub.2 O.sub.3 | Volker Arndt, Rainer Feser, Werner Steck | 1989-05-02 |
| 4781851 | Preparation of ferromagnetic chromium dioxide | Werner Steck, Herbert Haberkorn, Laszlo Marosi, Werner Huebner | 1988-11-01 |
| 4774072 | Preparation of acicular alpha-Fe.sub.2 O.sub.3 | Volker Arndt, Bernd Meyer, Rainer Feser, Werner Steck | 1988-09-27 |
| 4764300 | Preparation of finely divided and acicular hexagonal ferrites and their use for the production of magnetic recording media and plastoferrites | Hartmut Hibst, Peter Rudolf | 1988-08-16 |
| 4755395 | Preparation of acicular cobalt-containing ferrimagnetic iron oxides | Werner Steck, Rainer Feser, Werner Loeser, Peter Rudolf, Guenter Vaeth +1 more | 1988-07-05 |
| 4755315 | Preparation of cobalt-containing isotropic magnetic iron oxides | Werner Steck, Rainer Feser, Peter Rudolf, Guenter Vaeth, Udo Kullmann | 1988-07-05 |
| 4729785 | Preparation of acicular ferromagnetic metal particles consisting essentially of iron | Ekkehard Schwab, Werner Steck, Peter Rudolf, Guenter Vaeth, Jenoe Kovacs | 1988-03-08 |
| 4650597 | Preparation of finely divided isotropic cobalt-containing ferrite powder | Hartmut Hibst | 1987-03-17 |
| 4631140 | Ferrimagnetic particles and their preparation | Werner Steck | 1986-12-23 |
| 4619777 | Preparation of a magnetic dispersion | Milena Melzer, Werner Grau, Eberhard Koster, Werner Loser, Reinhard Polke +3 more | 1986-10-28 |
| 4581246 | Production of magnetic recording media | Milena Melzer, Norbert Schneider, Werner Balz | 1986-04-08 |