Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5380929 | Process for the preparation of acetic acid and acetic anhydride | Klaus Gehrmann, Erhard Jagers, Georg Kohl | 1995-01-10 |
| 5296630 | Process for continuously producing an anhydrous methyl acetate/methanol mixture | Klaus Gunther, Gerog Kohl | 1994-03-22 |
| 5166452 | Process for inhibiting and destroying peroxides in dialkyl ethers | Reinhard Gradl, Norbert Weferling, Erhard Jagers | 1992-11-24 |
| 5124290 | Process for removing metallic corrosion products from carbonylation reactions carried out under anhydrous conditions | Reinhard Gradl, Erhard Jagers, Andreas Seidel, Peter Prinz | 1992-06-23 |
| 5075485 | Process for the preparation of N-acylphosphinothricin diesters | Manfred Bohshar, Erhard Jagers, Hanss-Jerg Kleiner, Hans-Peter Koll | 1991-12-24 |
| 5047377 | Process for the purification and recovery of the contaminated solution of the catalyst produced on carbonylation of methanol and/or methyl acetate and/or dimethyl ether | Eitel Goedicke, Winfried Lork, Heribert Tetzlaff | 1991-09-10 |
| 5002914 | Process for purifying and recovering the contaminated catalyst solution arising in the carbonylation of methanol and/or methyl acetate and/or dimethyl ether | Winfried Lork, Norbert Weferling, Peter Prinz | 1991-03-26 |
| 4985383 | Process for removing metallic corrosion products from a contaminated catalyst solution produced on carbonylation of methanol and/or methyl acetate and/or dimethyl ether | Winfried Lork, Andreas Seidel, Peter Prinz | 1991-01-15 |
| 4898966 | Process for the preparation of phenylalanine n-propyl ester hydrochloride | Klaus Gehrmann, Peter Horstermann, Erhard Jagers, Georg Kohl | 1990-02-06 |
| 4892971 | Process for the preparation of n-acetylphenylalanine | Klaus Gehrmann, Peter Horstermann | 1990-01-09 |
| 4746640 | Process for purifying and recovering catalyst solution contaminated during the carbonylation of methyl acetate and/or dimethylether | Klaus Gehrmann, Winfried Lork | 1988-05-24 |
| 4717454 | Process for removing acetone from reaction mixtures of carbonylation reactions | Klaus Gehrmann, Peter Horstermann, Georg Kohl | 1988-01-05 |
| 4664753 | Process for separating iodine and its compounds from the carbonylation products obtained by subjecting dimethylether, methyl acetate or methanol to a carbonylation reaction | Klaus Gehrmann, Winfried Lork, Peter Prinz | 1987-05-12 |
| 4629711 | Process for purifying and recovering contaminated catalyst solution obtained in the carbonylation of methyl acetate and/or dimethylether | Klaus Gehrmann, Winfried Lork, Peter Prinz | 1986-12-16 |
| 4557760 | Process for recovering noble metals belonging to group VIII of the Periodic System of the elements from a contaminated catalyst solution originating from the carbonylation of methyl acetate and/or dimethylether | Klaus Gehrmann, Winfried Lork, Peter Prinz | 1985-12-10 |
| 4556644 | Process for purifying and recovering contaminated catalyst solution obtained in the carbonylation of methyl acetate and/or dimethylether | Klaus Gehrmann, Winfried Lork, Peter Prinz | 1985-12-03 |
| 4549937 | Process for separating the catalyst system from the reaction mixtures of carbonylation reactions | Klaus Gehrmann, Peter Horstermann, Hans-Klaus Kubbeler, Georg Kohl | 1985-10-29 |
| 4543217 | Process for making carboxylic acid halides | Klaus Gehrmann, Winfried Lork, Peter Prinz | 1985-09-24 |
| 4444624 | Process for separating acetone from carbonylation mixtures | Klaus Gehrmann, Winfried Lork, Peter Prinz | 1984-04-24 |
| 4442304 | Process for purifying and recovering contaminated catalyst solution obtained in the carbonylation of methyl acetate and/or dimethylether | Klaus Gehrmann, Winfried Lork, Peter Prinz | 1984-04-10 |
| 4440570 | Process for purifying and recovering contaminated catalyst solution obtained in the carbonylation of methyl acetate and/or dimethylether | Klaus Gehrmann, Winfried Lork, Peter Prinz | 1984-04-03 |
| 4430273 | Production of acetic anhydride | Klaus Gehrmann, Hans-Klaus Kubbeler, Klaus Schmitt | 1984-02-07 |
| 4414160 | Process for making carboxylic acid halides | Klaus Gehrmann, Winfried Lork, Peter Prinz | 1983-11-08 |
| 4352761 | Production of acetyl chloride | Klaus Gehrmann, Winfried Lork, Peter Pring | 1982-10-05 |
| 4351972 | Process for making anhydrous alkyl iodides | Hans-Klaus Kubbeler, Klaus Gehrmann, Klaus Schmitz | 1982-09-28 |