| 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 |
