Issued Patents All Time
Showing 1–25 of 42 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6054617 | Nitro compound-reducing process | Helmut Bahrmann, Andreas Dierdorf, Steffen Haber | 2000-04-25 |
| 5091350 | Process for hydroformylation with rhodium catalysts and the separation of rhodium therefrom | Werner Konkol, Helmut Bahrmann, Hanswilhelm Bach, Ernest Wiebus, Wolfgang Lipps | 1992-02-25 |
| 4879418 | Process for the preparation of aldehydes | Hanswilhelm Bach, Helmut Bahrmann, Wilhelm Gick, Volker Heim, Werner Konkol +1 more | 1989-11-07 |
| 4808758 | Hydroformylation process | Hanswilhelm Bach, Wilhelm Gick, Heinz-Dieter Hahn, Werner Konkol, Ernst Wiebus | 1989-02-28 |
| 4808757 | Process for the preparation of aldehydes | Werner Konkol, Hanswilhelm Bach, Wilhelm Gick, Ernst Wiebus, Helmut Bahrmann +1 more | 1989-02-28 |
| 4801754 | Hydroformylation process | Hanswilhelm Bach, Wilhelm Gick, Gehard Diekhaus, Werner Konkol, Ernest Wiebus | 1989-01-31 |
| 4795727 | Rhodium catalysts and methods of preparation and use thereof | Hanswilhelm Bach, Helmut Bahrmann, Werner Konkol, Ernst Wiebus | 1989-01-03 |
| 4731485 | Process for hydroformylation with rhodium catalysts and the separation of rhodium therefrom | Werner Konkol, Helmut Bahrmann, Hanswilhelm Bach, Ernest Wiebus, Wolfgang Lipps | 1988-03-15 |
| 4723047 | Process for the preparation of nonadecanediols | Helmut Bahrmann, Werner Konkol, Jurgen Weber, Ludger Bexten, Hanswilhelm Bach | 1988-02-02 |
| 4710321 | Quaternary ammonium salts of sulfonated triarylphosphines and process for the production thereof | Helmut Bahrmann, Wolfgang Lipps, Peter Lappe, Helmut Springer | 1987-12-01 |
| 4684750 | Process for the production of 2-ethyl-hexanol | Gunther Kessen, Wilhelm Gick, Ernst Wiebus, Joseph Hibbel, Hanswilhelm Bach +1 more | 1987-08-04 |
| 4673535 | Quaternary ammonium salts of sulfonated triarylphosphines and process for the production thereof | Helmut Bahrmann, Wolfgang Lipps, Peter Lappe, Helmut Springer | 1987-06-16 |
| 4623490 | Process for the purification of sulfonated aryl phosphines | Ludger Bexten, Dieter Kupies | 1986-11-18 |
| 4616096 | Process for the production of aldehydes | Helmut Bahrmann, Wolfgang Lipps, Werner Konkol | 1986-10-07 |
| 4593126 | Process for preparing aldehydes | Werner Konkol, Hanswilhelm Bach, Georg Dambkes, Wilhelm Gick, Wolfgang Greb +2 more | 1986-06-03 |
| 4578523 | Process for the preparation of aldehydes | Helmut Bahrmann, Werner Konkol, Wolfgang Lipps | 1986-03-25 |
| 4551328 | Selectively absorbent layer for solar collectors, and method of making it | Edwin Erben, August Muhlratzer, Roland Bertinger, Bela Tihanyi, Werner DeWin | 1985-11-05 |
| 4533755 | Process for the hydroformylation of olefins | Josef Hibbel, Gunther Kessen, Werner Konkol, Bernhard Lieder, Ernst Wiebus +2 more | 1985-08-06 |
| 4532354 | Method for purifying N,N-dimethylaminopropylamine | Ernst Wiebus, Norbert Breitkopf | 1985-07-30 |
| 4523036 | Process for the preparation of aldehydes | Josef Hibbel, Bernhard Lieder, Joachim Much, Volkmar Schmidt, Ernst Wiebus +1 more | 1985-06-11 |
| 4511439 | Solar-selective layers and method for producing same | Jurgen Weber, Bela Tihanyi, Werner DeWin | 1985-04-16 |
| 4510182 | Method for the production of homogeneous coatings of two or more metals and/or metal compounds | Bela Tihanyi, Jurgen Weber, Werner DeWin, Edwin Erben, August Muhlratzer | 1985-04-09 |
| 4504588 | Process for the recovery of water-soluble hydroformylation catalysts containing rhodium | Roderich Gartner, Ludger Bexten, Dieter Kupies | 1985-03-12 |
| 4483802 | Process for the preparation of sulfonated aryl phosphine | Roderich Gartner, Helmut Springer, Peter Lappe | 1984-11-20 |
| 4474578 | Coal/diesel fuel suspensions containing wax-like polymers | Mufit Bahadir, John Hobes, Winfried Materne | 1984-10-02 |