Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5387402 | Contact reactor for a quasi-isothermal catalytic oxidation of SO.sub.2 to SO.sub.3 and method of operating same | Michael Tacke, Peter Ahrens, Hugo Grimm, Heinz Neumann, Egon Winkler +2 more | 1995-02-07 |
| 5084319 | Disk-shaped magnetic recording media, their production and information stores containing these recording media | Hartmut Hibst, Joachim Hack, Heinrich Mannsperger, Michael Hitzfeld, Werner Grau +2 more | 1992-01-28 |
| 4997675 | Production of magnetic recording media for perpendicular recording | Hartmut Hibst, Erich Haedicke | 1991-03-05 |
| 4954422 | Recording material containing a layer of polymer particles and a superimposed metallic layer | Josef Lamprecht, Gregor Ley, Helmut Barzynski | 1990-09-04 |
| 4948281 | Keyboard protected against vandalism and spill | — | 1990-08-14 |
| 4937171 | Photosensitive recording material | Josef Lamprecht, Gregor Ley, Helmut Barzynski | 1990-06-26 |
| 4900397 | Production of magnetic recording media | Hartmut Hibst, Erich Haedicke, Johann Kronenbitter | 1990-02-13 |
| 4830465 | Irreversible optical recording media and fabrication thereof | Hartmut Hibst, Helmut Barzynski | 1989-05-16 |
| 4766021 | Optical recording medium | Hartmut Hibst, Juergen Petermann | 1988-08-23 |
| 4670332 | Irreversible optical medium for information storage, and its production | Hartmut Hibst, Klaus D. Schomann | 1987-06-02 |