Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7985705 | Three-layered, four-layered, or five-layered catalyst systems for producing phthalic anhydride | Jürgen Zühlke, Samuel Neto, 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 | Samuel Neto, Jürgen Zühlke, Frank Rosowski | 2010-12-14 |
| 7687425 | Three-layered or four-layered catalyst systems for producing phthalic anhydride | Jürgen Zühlke, Samuel Neto, Frank Rosowski | 2010-03-30 |
| 7592294 | Gas phase oxidation catalyst with defined vanadium oxide particle size distribution | Jürgen Zühlke, Samuel Neto, Frank Rosowski, Wolfgang Rummel | 2009-09-22 |
| 7495132 | Catalytically active composition and the use thereof in dehydration methods | Christian Walsdorff, Thorsten Johann, Beatrice Roessler, Hartmut Hibst, Joaquim Henrique Teles +1 more | 2009-02-24 |
| 7462727 | Multimetal oxide containing silver, vanadium and a promoter metal and use thereof | Samuel Neto, Hartmut Hibst, Frank Rosowski | 2008-12-09 |
| 7390911 | Method for producing phthalic anhydride | Samuel Neto, Jürgen Zühlke, 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 | Jürgen Zühlke, Samuel Neto, Frank Rosowski | 2008-05-13 |
| 7338918 | Catalyst having a silver-vanadium oxide phase and a promoter phase | Samuel Neto, Frank Rosowski, Stefan Bauer | 2008-03-04 |
| 7169732 | Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof | Jens Weiguny, Mark Duda, Cornelia Katharina Dobner | 2007-01-30 |
| 7157403 | Catalyst-precursor for the production of maleic acid anhydride and method for the production thereof | Jens Weiguny, Mark Duda, Cornelia Katharina Dobner | 2007-01-02 |
| 7151184 | Preparation of phthalic anhydride | Frank Rosowski, Michael Baier, Andreas Tenten, Hans-Josef Wolf | 2006-12-19 |
| 7071363 | Structured catalyst bed | Hartmut Hibst, Dirk Demuth, Wolfram Stichert, Jens Klein, Stephan Schunk +1 more | 2006-07-04 |
| 7060649 | Method for the production of a catalyst containing vanadium, phosphorus, and oxygen | Jens Weiguny, Mark Duda, Cornelia Katharina Dobner, Raimund Felder | 2006-06-13 |
| 6812351 | Hollow cylindrical catalyst and a method for producing a maleic acid anhydride | Jens Weiguny, Andreas Tenten | 2004-11-02 |
| 6803473 | Method for producing maleic acid anhydride | Jens Weiguny, Andreas Tenten, Wilhelm Ruppel | 2004-10-12 |