Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4557433 | Tape cassette and spring member therefor | Horst Fitterer, Roland Roos, Wulf Muenzner, Heinz Berger | 1985-12-10 |
| 4551359 | Production of magnetic recording media | August Lehner, Joachim Hack, Karl Krucker, Karl H. Roemer, Peter Rudolf +2 more | 1985-11-05 |
| 4534999 | Production of magnetic recording media having a backing coating | Hermann Roller, August Lehner, Joachim Hack, Werner Grau, Reinhold Baur | 1985-08-13 |
| 4507457 | Production of magnetic recording media | Albert Kohl, Norbert Schneider, Gregor Ley, Milena Melzer, Helmut Jakusch | 1985-03-26 |
| 4472455 | Production of magnetic recording media | Albert Kohl, Milena Melzer, Norbert Schneider, Eberhard Koester, August Lehner | 1984-09-18 |
| 4430362 | Production of magnetic recording media | Milena Melzer, Norbert Schneider, Helmut Kopke, Klaus Schoettle, Eberhard Koester +1 more | 1984-02-07 |
| 4360377 | Ferromagnetic metal particles, consisting essentially of iron and carrying a surface coating, and their production | Werner Steck, Hermann Roller, Wilhelm Sarnecki | 1982-11-23 |
| 4328282 | Magnetic recording media | August Lehner, Heinrich Hartmann, Rudolf Bachmann, Albert Kohl | 1982-05-04 |
| 4310565 | Process of making a magnetic recording media | August Lehner, Heinrich Hartmann, Rudolf Bachmann, Albert Kohl, Herbert Spoor +1 more | 1982-01-12 |