Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5556918 | Polymeric materials suitable as dispersing resins | Gregor Brodt, August Lehner, Alfred Lindner, Hermann Graf, Ria Kress +3 more | 1996-09-17 |
| 5543226 | Magnetic recording media | August Lehner, Hermann Roller, Rudolf Suettinger, Ria Kress, Norbert Schneider +6 more | 1996-08-06 |
| 5424132 | Magnetic recording media | Gregor Brodt, Ria Kress, Milena Melzer, Norbert Schneider | 1995-06-13 |
| 5378383 | Process for preparing modified chromium dioxide | Harald Jachow, Ekkehard Schwab, Reinhard Koerner, Norbert Mueller, Rudi Lehnert +4 more | 1995-01-03 |
| 5346761 | Flexible magnetic recording media having a backing coating containing a polyurethane resin having a phosphate group and precipated silica | Hermann Roller, Peter Engelhardt, Reinhold Baur, Werner Latzel, Werner Lenz +1 more | 1994-09-13 |
| 5330784 | Process of producing a flexible magnetic recording media having a backing coating | Gregor Brodt, Hermann Roller | 1994-07-19 |
| 5266407 | Magnetic recording media | Uwe Keppeler, Helmut Auweter, Rudolf Suettinger, Albert Kohl, Hermann Dikow +2 more | 1993-11-30 |
| 5266408 | Magnetic recording media | Uwe Keppeler, Hermann Dikow, Helmut Auweter, Jochen Rudolph, Gregor Brodt +3 more | 1993-11-30 |
| 5223600 | Heterofunctional diols and polyurethane elastomers manufactured therefrom | Uwe Keppeler | 1993-06-29 |
| 5217810 | Magnetic recording medium having a magnetic layer containing chromium dioxide particles and linolenic acid | August Lehner, Rudolf Suettinger, Hermann Dikow, Hermann Roller, Werner Lenz +3 more | 1993-06-08 |
| 5169721 | Magnetic recording media comprising a polyurethane binder resin containing perfluoro groups | August Lehner, Albert Kohl, Rudolf Suettinger, Uwe Keppeler, Werner Lenz | 1992-12-08 |
| 5147960 | Heterofunctional diols and polyurethane elastomers manufactured therefrom | Uwe Keppeler | 1992-09-15 |
| 5130202 | Magnetic recording medium containing an isocyanate-free branched thermoplastic polyurethane binder resin with urea groups at the chain ends | Uwe Keppeler, Guenter Heil, Hermann Roller, August Lehner, Werner Lenz +1 more | 1992-07-14 |
| 5120608 | Magnetic recording media comprising a polyurethane binder resin containing perfluoro groups | August Lehner, Albert Kohl, Rudolf Suettinger, Uwe Keppeler, Werner Lenz +3 more | 1992-06-09 |
| 5082737 | Magnetic recording media having a branched thermoplastic polyurethane binder containing a polysiloxane component in the main chain | Hermann Roller, August Lehner, Uwe Keppeler, Rudolf Suettinger, Werner Loch +2 more | 1992-01-21 |
| 5075179 | Magnetic recording media | August Lehner, Rudolf Suettinger, Hermann Dikow, Hermann Roller, Werner Lenz +3 more | 1991-12-24 |
| 4895764 | Magnetic recording media | August Lehner, Albert Kohl, Hermann Roller, Peter Richter, Werner Lenz +2 more | 1990-01-23 |