Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660760 | Magnetic coating dispersion | Attila Vass, Wolf-Dieter Schroeer, Hildegard Fischer | 1997-08-26 |
| 5415929 | Magnetic recording medium having a magnetic layer prepared from magnetic particles using specified dispersants which enhance the electrostatic change on the magnetic pigment surface | Attila Vass, Wolf-Dieter Schroeer | 1995-05-16 |
| 5256497 | Magnetic tape containing abrasives | Albrecht Koller | 1993-10-26 |
| 4981719 | Process for the production of a magnetic recording material | Horst Schulz, Johannes Gerum, Werner Wimbersky | 1991-01-01 |
| 4444867 | Photographic recording material for diffusion processes and new non-diffusing sulfilimine compounds suitable for use therein | — | 1984-04-24 |
| 4369243 | Photographic recording material for diffusion processes and useful non-diffusing sulfilimine compounds | Wolfgang Lassig, Karl-Wilhelm Schranz | 1983-01-18 |
| 4275200 | Process for the production of oxazolinone-2-compounds | Fritz Benker, Wolfgang Lassig, Ernst Meier, Siegfried Schleger | 1981-06-23 |
| 4198239 | Color photographic materials containing an antistain agent | Rigobert Otto, Karl-Wilhelm Schranz | 1980-04-15 |