Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7304188 | Preparation of highly pure methyl tert-butyl ether | Fritz Obenaus, Wilhelm Droste, Franz Nierlich, Rainer Malzkorn, Udo Peters +3 more | 2007-12-04 |
| 7179948 | Process for preparing tert-butanol | Franz Nierlich, Dieter Reusch, Silvia Santiago Fernandez, Andreas Beckmann, Wilfried Bueschken +1 more | 2007-02-20 |
| 6720457 | Process for the hydroformylation of higher olefins using cobalt compounds as catalyst | Stefan Drees, Alfred Kaizik, Walter Toetsch, Wilfried Bueschken, Martin Trocha | 2004-04-13 |
| 6680414 | Process for the hydrogenation of hydroformylation mixtures | Cord Knoop, Alfred Kaizik, Dietmar Gubisch, Joachim Schuler, Walter Totsch +1 more | 2004-01-20 |
| 6482992 | Multistage process for the preparation of oxo aldehydes and/or alcohols | Franz Nierlich, Alfred Kaizik, Dieter Hess, Wilfried Bueschken, Klaus-Diether Wiese +2 more | 2002-11-19 |
| 6407295 | Process for preparing higher oxo alcohols from olefin mixtures | Alfred Kaizik, Walter Toetsch, Martin Trocha, Wilfried Bueschken, Franz Nierlich | 2002-06-18 |
| 6331657 | Process for preparing higher oxo alcohols from olefin mixtures by two-stage hydroformylation | Alfred Kaizik, Walter Toetsch, Wilfried Bueschken, Franz Nierlich | 2001-12-18 |
| 6303535 | Process for reducing oxidic hydrogenation catalysts | Alfred Kaizik, Wilfried Buschken | 2001-10-16 |
| 6239318 | Process for the selective hydrogenation of hydroformylation mixtures | Joachim Schuler, Alfred Kaizik, Wilfried Bueschken, Wilhelm Droste | 2001-05-29 |
| 6015928 | Process for the production of higher oxo alcohols | Dietmar Gubisch, Klaus Armbrust, Alfred Kaizik, Rudolf Nehring | 2000-01-18 |
| 5294658 | Process for the preparation of large-particle, aqueous plastic dispersions | Klaus Walther, Heinz Riemer | 1994-03-15 |
| 5146039 | Process for low level desulfurization of hydrocarbons | Thomas Wildt, Franz Nierlich, Wilhelm Droste, Joachim Neumeister | 1992-09-08 |
| 4950709 | Process for the preparation of coarse, aqueous plastic dispersions by emulsion polymerizing with a branched polyethylene oxide | Herbert Schlueter, Wolfgang Holtrup, Klaus Walther | 1990-08-21 |
| 4855372 | Method of preparing pulverulent olefin-maleic anhydride copolymers | — | 1989-08-08 |
| 4789716 | Method of manufacturing polymaleic anhydride powders | — | 1988-12-06 |
| 4517395 | Process for the selective hydrogenation of polyunsaturated hydrocarbons in hydrocarbon mixtures | Fritz Obenaus, Franz Nierlich, Otto Reitemeyer | 1985-05-14 |
| 4423271 | Process for producing high purity isobutene by dehydrating tertiary butanol | Fritz Obenaus, Bernd Greving, Heinrich Balke | 1983-12-27 |