Issued Patents All Time
Showing 51–75 of 84 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5200085 | Process and apparatus for extraction of solid matter containing fat and/or protein from sludge | Bela G. Szabo, Ferenc Janko, Erzsebet Neszmelyi, Janos Illes, Istvan Takacs +2 more | 1993-04-06 |
| 5194152 | Apparatus to contact liquids of different density | Istvan Takacs, Gyula Beszedics, Gyorgy Fabry | 1993-03-16 |
| 5164173 | Preparation of stabilized acicular ferromagnetic chromium dioxide | Norbert Muller, Manfred Ohlinger, Rainer Feser, Bernhard Bottcher, Werner Hubner | 1992-11-17 |
| 4895764 | Magnetic recording media | August Lehner, Albert Kohl, Michael Bobrich, Hermann Roller, Peter Richter +2 more | 1990-01-23 |
| 4796137 | Protective jacket for a disk-shaped recording medium | Dietrich Gruehn, Joachim Hack, Hubert Fehrenbach, Norbert Holl | 1989-01-03 |
| 4764300 | Preparation of finely divided and acicular hexagonal ferrites and their use for the production of magnetic recording media and plastoferrites | Hartmut Hibst, Helmut Jakusch | 1988-08-16 |
| 4755315 | Preparation of cobalt-containing isotropic magnetic iron oxides | Werner Steck, Rainer Feser, Helmut Jakusch, Guenter Vaeth, Udo Kullmann | 1988-07-05 |
| 4755395 | Preparation of acicular cobalt-containing ferrimagnetic iron oxides | Werner Steck, Rainer Feser, Werner Loeser, Guenter Vaeth, Helmut Jakusch +1 more | 1988-07-05 |
| 4729785 | Preparation of acicular ferromagnetic metal particles consisting essentially of iron | Ekkehard Schwab, Werner Steck, Guenter Vaeth, Helmut Jakusch, Jenoe Kovacs | 1988-03-08 |
| 4675170 | Preparation of finely divided acicular hexagonal ferrites having a high coercive force | Hartmut Hibst, Graham E. McKee | 1987-06-23 |
| 4670177 | Preparation of ferromagnetic chromium dioxide | Manfred Ohlinger, Norbert Mueller, Eugen Wettstein | 1987-06-02 |
| 4551359 | Production of magnetic recording media | August Lehner, Joachim Hack, Karl Krucker, Werner Balz, Karl H. Roemer +2 more | 1985-11-05 |
| 4539111 | Extraction apparatus | Istvan Takacs, Gyorgy Kerey, Janos Illes, Bela G. Szabo, Endre Vereczkey +3 more | 1985-09-03 |
| 4521527 | Molded iron catalyst and its preparation | Gerhard Frank, Gerald Neubauer, Manfred Ohlinger, Hans J. Wilfinger, Emil Pfannebecker +1 more | 1985-06-04 |
| 4518771 | Process for the production of heparin-containing particulate products | Istvan Takacs, Gyorgy Kerey, Janos Illes, Pal Gere, Laszlo Czebe +1 more | 1985-05-21 |
| 4514937 | Method for the surface treatment of magnetic recording media | Manfred Gehrung, Klaus Schoettle, Helmut Kreissler, Joachim Hack, Friedrich Anslinger | 1985-05-07 |
| 4497723 | Preparation of acicular, ferrimagnetic iron oxides | Manfred Ohlinger, Guenter Vaeth, Wilhelm Sarnecki, Helmut Jakusch, Eberhard Koester +1 more | 1985-02-05 |
| 4492804 | Preparation of primary amines | Gerhard Frank, Gerald Neubauer, Paul Duffner, Manfred Ohlinger, Hans J. Wilfinger +1 more | 1985-01-08 |
| 4464352 | Manufacture of acicular ferrimagnetic iron oxide | Horst Autzen, Herbert Motz, Wilhelm Sarnecki, Werner Steck, Guenter Vaeth | 1984-08-07 |
| 4457982 | Acicular ferrimagnetic iron oxide and its preparation | Jenoe Kovacs, Guenter Vaeth, Manfred Ohlinger | 1984-07-03 |
| 4448761 | Preparation of acicular, ferrimagnetic iron oxides | Wilhelm Sarnecki, Jenoe Kovacs, Werner Loeser, Guenter Vaeth | 1984-05-15 |
| 4439231 | Preparation of acicular ferromagnetic metal particles consisting essentially of iron | Werner Steck, Wilhelm Sarnecki, Werner Loeser, Jenoe Kovacs, Helmut Jakusch | 1984-03-27 |
| 4435182 | Process for the extraction of solid material from solution by crystallization | Zoltan Banos, Endre Vereczkey, Gyorgy Kerey, Istvan Takacs, Jozsef Felmeri +1 more | 1984-03-06 |
| 4420330 | Stabilization of pyrophoric ferromagnetic acicular metal particles consisting essentially of iron | Helmut Jakusch, Werner Loeser, Eberhard Koester, Werner Senkpiel, Werner Steck | 1983-12-13 |
| 4406795 | Extraction process | Istvan Takacs, Gyorgy Kerey, Janos Illes, Bela G. Szabo, Endre Vereczkey +3 more | 1983-09-27 |