Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5169982 | Process for separating iodine and its compounds from the products obtained on subjecting dimethylether, methyl acetate or methanol to carbonylation | Erpenbach Heinz, Klaus Gehrmann | 1992-12-08 |
| 5066365 | Process for the isolation of vinyl acetate by distillation | Gunter Roscher, Karl-Heinz Schmidt, Klaus Eichler, Reinhard Gradl, Horst Langner | 1991-11-19 |
| 4898966 | Process for the preparation of phenylalanine n-propyl ester hydrochloride | Heinz Erpenbach, Klaus Gehrmann, Erhard Jagers, Georg Kohl | 1990-02-06 |
| 4892971 | Process for the preparation of n-acetylphenylalanine | Heinz Erpenbach, Klaus Gehrmann | 1990-01-09 |
| 4717454 | Process for removing acetone from reaction mixtures of carbonylation reactions | Heinz Erpenbach, Klaus Gehrmann, Georg Kohl | 1988-01-05 |
| 4549937 | Process for separating the catalyst system from the reaction mixtures of carbonylation reactions | Heinz Erpenbach, Klaus Gehrmann, Hans-Klaus Kubbeler, Georg Kohl | 1985-10-29 |