Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6231963 | Magnetic recording media | August Lehner, Helmut Jakusch, Volker Koch, Manfred Ohlinger, Albert Kohl +7 more | 2001-05-15 |
| 5569409 | Finely divided acicular magnetic modified chromium dioxide | Harald Jachow, Reinhard K orner, Ronald J. Veitch, Ekkehard Schwab, Helmut Jakusch +2 more | 1996-10-29 |
| 5378383 | Process for preparing modified chromium dioxide | Harald Jachow, Ekkehard Schwab, Reinhard Koerner, Norbert Mueller, Manfred Ohlinger +4 more | 1995-01-03 |
| 5030371 | Process for preparing acicular ferromagnetic material consisting essentially of iron-containing chromium dioxide | Michael Mueller, Ekkehard Schwab, Helmut Auweter, Rainer Feser, Norbert Mueller +1 more | 1991-07-09 |