| 5077438 |
Process for the preparation of acrolein |
Matthias Schwarzmann, Kurt Weinacht, Franz Merger |
1991-12-31 |
| 5047161 |
Preparation of isometric cobalt- and titanium-containing magnetic iron oxides |
Hartmut Hibst, Helmut Jakusch |
1991-09-10 |
| 5015785 |
Preparation of mixtures of isomeric cresols with a molar ratio of para- to meta-cresol of at least 0.6:1 to 10:1 |
Helmut Lermer, Matthias Schwarzmann, Toni Dockner |
1991-05-14 |
| 5009877 |
Stabilization of acicular ferromagnetic chromium dioxide |
Laszlo Marosi, Herbert Haberkorn, Rainer Feser, Werner Huebner, Helmut Jakusch |
1991-04-23 |
| 5002639 |
Separation of ortho-, meta- and para-tolunitrile from ternary mixtures of the isomers |
Harald Rust, Helmut Lermer, Fritz Naeumann |
1991-03-26 |
| 4967013 |
Preparation of hydroxybenzaldehydes |
Helmut Lermer, Harald Rust, Gerhard Fritz, Hardo Siegel |
1990-10-30 |
| 4960462 |
Acicular, ferromagnetic metal particles essentially consisting of iron, and their preparation |
Michael Mueller, Kalus-Dieter Hoppe, Ekkehard Schwab, Helmut Auweter, Rainer Feser |
1990-10-02 |
| 4933004 |
Preparation of acicular ferromagnetic metal particles of substantially iron |
Klaus-Dieter Hoppe, Jenoe Kovacs, Rainer Feser, Helmut Jakusch |
1990-06-12 |
| 4826671 |
Preparation of acicular .alpha.-Fe.sub.2 O.sub.3 |
Volker Arndt, Rainer Feser, Helmut Jakusch |
1989-05-02 |
| 4810401 |
Superparamagnetic solid particles |
Gunther Mair |
1989-03-07 |
| 4781851 |
Preparation of ferromagnetic chromium dioxide |
Herbert Haberkorn, Laszlo Marosi, Werner Huebner, Helmut Jakusch |
1988-11-01 |
| 4774072 |
Preparation of acicular alpha-Fe.sub.2 O.sub.3 |
Volker Arndt, Bernd Meyer, Rainer Feser, Helmut Jakusch |
1988-09-27 |
| 4770903 |
Preparation of cobalt-containing, acicular, magnetic iron oxides |
Ekkehard Schwab, Wilhelm Schloesser, Rainer Feser |
1988-09-13 |
| 4755315 |
Preparation of cobalt-containing isotropic magnetic iron oxides |
Rainer Feser, Helmut Jakusch, Peter Rudolf, Guenter Vaeth, Udo Kullmann |
1988-07-05 |
| 4755395 |
Preparation of acicular cobalt-containing ferrimagnetic iron oxides |
Rainer Feser, Werner Loeser, Peter Rudolf, Guenter Vaeth, Helmut Jakusch +1 more |
1988-07-05 |
| 4729785 |
Preparation of acicular ferromagnetic metal particles consisting essentially of iron |
Ekkehard Schwab, Peter Rudolf, Guenter Vaeth, Helmut Jakusch, Jenoe Kovacs |
1988-03-08 |
| 4631140 |
Ferrimagnetic particles and their preparation |
Helmut Jakusch |
1986-12-23 |
| 4495246 |
Acicular ferromagnetic chromium dioxide particles |
Jenoe Kovacs, Norbert Mueller, Helmut Jakusch |
1985-01-22 |
| 4464352 |
Manufacture of acicular ferrimagnetic iron oxide |
Horst Autzen, Herbert Motz, Peter Rudolf, Wilhelm Sarnecki, Guenter Vaeth |
1984-08-07 |
| 4439231 |
Preparation of acicular ferromagnetic metal particles consisting essentially of iron |
Peter Rudolf, Wilhelm Sarnecki, Werner Loeser, Jenoe Kovacs, Helmut Jakusch |
1984-03-27 |
| 4420330 |
Stabilization of pyrophoric ferromagnetic acicular metal particles consisting essentially of iron |
Helmut Jakusch, Werner Loeser, Eberhard Koester, Peter Rudolf, Werner Senkpiel |
1983-12-13 |
| 4378240 |
Preparation of acicular ferromagnetic metal particles consisting essentially of iron |
Hansjoerg Siegle, Hans H. Reich, Horst Autzen, Werner Loeser, Eckhard Hetzel +1 more |
1983-03-29 |
| 4367214 |
Manufacture of acicular ferrimagnetic iron oxide |
Wilhelm Sarnecki, Laszlo Marosi, Horst Autzen, Manfred Ohlinger |
1983-01-04 |
| 4360377 |
Ferromagnetic metal particles, consisting essentially of iron and carrying a surface coating, and their production |
Hermann Roller, Wilhelm Sarnecki, Werner Balz |
1982-11-23 |
| 4344791 |
Manufacture of acicular ferromagnetic iron particles |
Wilhelm Sarnecki, Laszlo Marosi, Manfred Ohlinger, Werner Loeser |
1982-08-17 |
