Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6458970 | Method for producing acid phthalic anhydride and an appropriate shell catalyst containing titanium-vanadium-cesium | Gerhard Hefele, Walter Scheidmeir, Bernhard Ulrich | 2002-10-01 |
| 4994603 | Preparation of methyl formate | Franz Mueller, Wolfgang Steiner, Karl-Heinz Ross | 1991-02-19 |
| 4659866 | Continuous preparation of furmamide | Kaspar Bott, Gerd Kaibel, Herwig Hoffmann, Rudolf Irnich | 1987-04-21 |
| 4262140 | Production of anhydrous or substantially anhydrous formic acid | Kaspar Bott, Gerd Kaibel, Herwig Hoffmann, Rudolf Irnich | 1981-04-14 |