Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6458970 | Method for producing acid phthalic anhydride and an appropriate shell catalyst containing titanium-vanadium-cesium | Gerhard Hefele, Otto Kratzer, Bernhard Ulrich | 2002-10-01 |
| 5225574 | Preparation of phthalic anhydride from o-xylene | Heinrich Aichinger, Wilhelm Ruppel, Rolf Seubert, Karl-Heinz Boehning, Johannes E. Schmidt +1 more | 1993-07-06 |
| 4996324 | Preparation of alkanols which are substituted in the 1 position by aromatic or heterocyclic radicals | Kaspar Bott, Herwig Hoffmann, Horst Trapp | 1991-02-26 |
| 4987270 | Preparation of 3-arylisobutyl alcohols | Kaspar Bott, Herwig Hoffman | 1991-01-22 |