Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7314965 | Catalysts containing copper and zinc for the purification of ethylene | Gerald Vorberg, Wolfgang Jürgen Pöpel | 2008-01-01 |
| 5714644 | Process and catalyst for the selective hydrogenation of butynediol to butenediol | Matthias Irgang, Volkmar Menger, Peter Stops, Fritz Graf | 1998-02-03 |
| 4568427 | Continuous isolation of phthalic anhydride and maleic anhydride from reaction gases | Eckehard Danz, Gerd Dumbgen, Johannes E. Schmidt, Friedrich Wirth | 1986-02-04 |
| 4393251 | Preparation of propanediols using a copper-and zinc containing hydrogenation catalyst | Franz J. Broecker, Leopold Hupfer, Franz Merger, Juergen Paetsch, Guenter Zirker | 1983-07-12 |
| 4386018 | Hydrogenation catalysts for the preparation of propanediols | Franz Merger, Franz J. Broecker, Wolfgang Schroeder, Karl Baer, Juergen Paetsch +1 more | 1983-05-31 |
| 4386219 | Hydrogenation catalysts for the preparation of propanediols and processes for the preparation of propanediols, using such catalysts | Franz Merger, Franz J. Broecker, Wolfgang Schroeder, Karl Baer, Juergen Paetsch +1 more | 1983-05-31 |
| 4192807 | Manufacture of .gamma.-butyrolactone from maleic anhydride | Franz J. Broecker, Gerd Duembgen, Helmut Glietenberg, Matthias Schwarzmann | 1980-03-11 |