Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5218145 | Method for making isobutyric acid | Hermann Siegert | 1993-06-08 |
| 5169985 | Continuous method for making isobutyric acid | Willi Ploesser | 1992-12-08 |
| 5132449 | Method for the catalytic vapor phase oxydehydrogenation of isobutyric acid | Klaus Langerbeins, Ruediger Jelitte, Gerhard Emig, Otto Watzenberger | 1992-07-21 |
| 4992582 | Method for making isobutyric acid | Hermann Siegert | 1991-02-12 |
| 4791080 | Oxidative catalyst regeneration | Wilheim Gruber, Klaus Langerbeins | 1988-12-13 |
| 4400568 | Process for preparing styrene, and an appropriate agent | Hanns Hofmann, Gerd Emig | 1983-08-23 |