Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9688606 | Process for acidic scrubbing of dinitrotoluene in the presence of hydrocyanic acid | Rüdiger Fritz, Renate Hempel, Holger Allardt, Yuan Shen Dai, Barbara BECKER +5 more | 2017-06-27 |
| 9284257 | Separation method for dinitrotoluene and mixed acid in a toluene to dinitrotoluene process | Yuanshen Dai, DA-PENG LI, Pei Jia, Zhan Cai | 2016-03-15 |
| 9249083 | Process for scrubbing dinitrotoluene | Ruediger Fritz, Renate Hempel, Holger Allardt, Barbara BECKER, Julia Leschinski +4 more | 2016-02-02 |
| 9115049 | Process for obtaining pure aniline | Koenraad VANDEWALLE, Karen Vercruysse, Leo Denissen, Filip Deberdt, Hendrik DE WINNE +2 more | 2015-08-25 |
| 8895783 | Monitoring of the stoichiometric ratio in the reaction of nitroaromatics with hydrogen | Andreas Raichle, Stefanie Haase, Holgar Braunsberg, Johannes Buettner, Ulrich Penzel | 2014-11-25 |
| 8697921 | Process for purifying wastewaters from the workup of crude aromatic nitro compounds | Petra Deckert, Leo Denissen, Bart Van De Voorde, Julia Leschinski, Stefan Robert Deibel +1 more | 2014-04-15 |
| 8614356 | Method for producing toluylenediamine by hydrogenating dinitrotoluene | Joana Coelho Tsou, Steffen Oehlenschlaeger, Ekkehard Schwab, Wolfgang Mackenroth, Hartwig Voss +3 more | 2013-12-24 |
| 8609899 | Process for preparing toluenediamine by hydrogenation of dinitrotoluene | Andreas Raichle, Joana Coelho Tsou, Ulrich Penzel, Steffen Oehlenschlaeger, Michael Zoellinger +3 more | 2013-12-17 |
| 7985705 | Three-layered, four-layered, or five-layered catalyst systems for producing phthalic anhydride | Sebastian Storck, Jürgen Zühlke, Frank Rosowski | 2011-07-26 |
| 7851398 | Catalytic titanium dioxide mixtures, catalysts and catalyst systems containing the same, processes for making the same, and uses therefor | Sebastian Storck, Jürgen Zühlke, Frank Rosowski | 2010-12-14 |
| 7687425 | Three-layered or four-layered catalyst systems for producing phthalic anhydride | Sebastian Storck, Jürgen Zühlke, Frank Rosowski | 2010-03-30 |
| 7592294 | Gas phase oxidation catalyst with defined vanadium oxide particle size distribution | Sebastian Storck, Jürgen Zühlke, Frank Rosowski, Wolfgang Rummel | 2009-09-22 |
| 7462727 | Multimetal oxide containing silver, vanadium and a promoter metal and use thereof | Hartmut Hibst, Frank Rosowski, Sebastian Storck | 2008-12-09 |
| 7390911 | Method for producing phthalic anhydride | Jürgen Zühlke, Sebastian Storck, Frank Rosowski | 2008-06-24 |
| 7371893 | Production of aldehydes, carboxylic acids and/or carboxylic acid anhydrides by means of catalysts containing vanadium oxide, titanium dioxide, and antimony oxide | Sebastian Storck, Jürgen Zühlke, Frank Rosowski | 2008-05-13 |
| 7338918 | Catalyst having a silver-vanadium oxide phase and a promoter phase | Frank Rosowski, Sebastian Storck, Stefan Bauer | 2008-03-04 |