Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5130202 | Magnetic recording medium containing an isocyanate-free branched thermoplastic polyurethane binder resin with urea groups at the chain ends | Uwe Keppeler, Michael Bobrich, Hermann Roller, August Lehner, Werner Lenz +1 more | 1992-07-14 |
| 5084319 | Disk-shaped magnetic recording media, their production and information stores containing these recording media | Hartmut Hibst, Arend Werner, Joachim Hack, Heinrich Mannsperger, Michael Hitzfeld +2 more | 1992-01-28 |
| 4673591 | Production of layer-type magnetic recording media | August Lehner, Werner Lenz, Werner Balz, Albert Kohl, Gunnar Schornick | 1987-06-16 |
| 4671969 | Production of layer-type magnetic recording media | August Lehner, Werner Balz, Werner Lenz, Albert Kohl | 1987-06-09 |
| 4666781 | Magnetic recording media | August Lehner, Jenoe Kovacs, Werner Balz, Werner Lenz | 1987-05-19 |
| 4666783 | Magnetic recording media | Werner Lenz, Jenoe Kovacs | 1987-05-19 |
| 4560456 | Magnetic recording media | Werner Lenz, Jenoe Kovacs, Werner Grau, Werner Balz | 1985-12-24 |
| 4559118 | Magnetic recording media | Herbert Spoor, Werner Lenz, Jenoe Kovacs, Werner Grau, Werner Balz +1 more | 1985-12-17 |
| 4557813 | Magnetic recording media | Werner Lenz, Jenoe Kovacs | 1985-12-10 |
| 4522693 | Photopolymerizable composition with acylphosphine sulfide photoinitiator and method | Andreas Henne, Anton Hesse, Gunnar Schornick | 1985-06-11 |
| 4424314 | Curable coating composition | Helmut Barzynski, Heinrich Hartmann, Dieter Lautenbach, Rolf Osterloh, Lutz Goethlich | 1984-01-03 |
| 4334034 | Process for the preparation of polymerizable polyurethane elastomers | August Lehner, Heinrich Hartmann, Werner Lenz, Ingolf Buethe, Rudolf Bachmann | 1982-06-08 |
| 4205139 | Curable coating composition | Helmut Barzynski, Heinrich Hartmann, Dieter Lautenbach, Rolf Osterloh, Lutz Goethlich | 1980-05-27 |