Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5543226 | Magnetic recording media | Michael Bobrich, August Lehner, Rudolf Suettinger, Ria Kress, Norbert Schneider +6 more | 1996-08-06 |
| 5470650 | Magnetic recording media | August Lehner, Norbert Schneider, Werner Balz, Werner Lenz, Albert Kohl | 1995-11-28 |
| 5419959 | Magnetic recording medium having an infra-red light transparent balkcoat layer | Peter Heilmann, Michael Hitzfeld, Dieter Stockburger, Werner Latzel, Reinhold Baur +4 more | 1995-05-30 |
| 5346761 | Flexible magnetic recording media having a backing coating containing a polyurethane resin having a phosphate group and precipated silica | Peter Engelhardt, Reinhold Baur, Michael Bobrich, Werner Latzel, Werner Lenz +1 more | 1994-09-13 |
| 5330784 | Process of producing a flexible magnetic recording media having a backing coating | Michael Bobrich, Gregor Brodt | 1994-07-19 |
| 5217810 | Magnetic recording medium having a magnetic layer containing chromium dioxide particles and linolenic acid | August Lehner, Rudolf Suettinger, Michael Bobrich, Hermann Dikow, Werner Lenz +3 more | 1993-06-08 |
| 5130202 | Magnetic recording medium containing an isocyanate-free branched thermoplastic polyurethane binder resin with urea groups at the chain ends | Uwe Keppeler, Michael Bobrich, Guenter Heil, August Lehner, Werner Lenz +1 more | 1992-07-14 |
| 5120608 | Magnetic recording media comprising a polyurethane binder resin containing perfluoro groups | Michael Bobrich, August Lehner, Albert Kohl, Rudolf Suettinger, Uwe Keppeler +3 more | 1992-06-09 |
| 5085889 | Process for the preparation of magnetic particle dispersions using ball mills and grinding media | Horst Platz, Peter Engelhardt, Friedrich Sommermann, Albert Kohl, Juergen Klausmann +2 more | 1992-02-04 |
| 5082737 | Magnetic recording media having a branched thermoplastic polyurethane binder containing a polysiloxane component in the main chain | Michael Bobrich, August Lehner, Uwe Keppeler, Rudolf Suettinger, Werner Loch +2 more | 1992-01-21 |
| 5075179 | Magnetic recording media | August Lehner, Rudolf Suettinger, Michael Bobrich, Hermann Dikow, Werner Lenz +3 more | 1991-12-24 |
| 5064721 | Magnetic recording media | August Lehner, Albert Kohl, Werner Lenz, Ludwig Kreitner, Helmut Kopke +2 more | 1991-11-12 |
| 4895764 | Magnetic recording media | August Lehner, Albert Kohl, Michael Bobrich, Peter Richter, Werner Lenz +2 more | 1990-01-23 |
| 4775553 | Production of magnetic recording media | Jenoe Kovacs, Peter Engelhardt, Lothar Schwarz, Peter Nagel | 1988-10-04 |
| 4656093 | Magnetic recording media | August Lehner, Albert Kohl, Werner Balz, Eerhard Koester, Friedrich Sommermann | 1987-04-07 |
| 4645723 | Production of magnetic recording media possessing a backing coating, and magnetic recording media thus produced | Milena Melzer, Norbert Schneider, Horst Fitterer, Wulf Munzner | 1987-02-24 |
| 4597990 | Preparation of magnetic recording media | Joachim Hack, Uwe Woweries, August Lehner, Werner Grau, Peter Nagel +1 more | 1986-07-01 |
| 4581296 | Magnetic recording media | Werner Balz, Jenoe Kovacs, Wulf Muenzner | 1986-04-08 |
| 4567108 | Magnetic recording media | August Lehner, Helmut Kopke, Werner Balz, Werner Grau, Eberhard Koester +1 more | 1986-01-28 |
| 4534999 | Production of magnetic recording media having a backing coating | August Lehner, Joachim Hack, Werner Grau, Werner Balz, Reinhold Baur | 1985-08-13 |
| 4360377 | Ferromagnetic metal particles, consisting essentially of iron and carrying a surface coating, and their production | Werner Steck, Wilhelm Sarnecki, Werner Balz | 1982-11-23 |