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 | Heinz Erpenbach, Erhard Jagers, Georg Kohl | 1995-01-10 |
| 5169982 | Process for separating iodine and its compounds from the products obtained on subjecting dimethylether, methyl acetate or methanol to carbonylation | Erpenbach Heinz, Peter Horstermann | 1992-12-08 |
| 4898966 | Process for the preparation of phenylalanine n-propyl ester hydrochloride | Heinz Erpenbach, Peter Horstermann, Erhard Jagers, Georg Kohl | 1990-02-06 |
| 4892971 | Process for the preparation of n-acetylphenylalanine | Heinz Erpenbach, Peter Horstermann | 1990-01-09 |
| 4746640 | Process for purifying and recovering catalyst solution contaminated during the carbonylation of methyl acetate and/or dimethylether | Heinz Erpenbach, Winfried Lork | 1988-05-24 |
| 4717454 | Process for removing acetone from reaction mixtures of carbonylation reactions | Heinz Erpenbach, 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 | Heinz Erpenbach, 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 | Heinz Erpenbach, Winfried Lork, Peter Prinz | 1986-12-16 |
| 4560518 | Process for the continuous production of 2-carboxyethyl-alkyl-phosphinic acid dialkylesters | Alexander Ohorodnik, Johannes Rosenthal | 1985-12-24 |
| 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 | Heinz Erpenbach, 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 | Heinz Erpenbach, Winfried Lork, Peter Prinz | 1985-12-03 |
| 4549937 | Process for separating the catalyst system from the reaction mixtures of carbonylation reactions | Heinz Erpenbach, Peter Horstermann, Hans-Klaus Kubbeler, Georg Kohl | 1985-10-29 |
| 4549995 | Process for making alkanephosphonous acid esters | Eberhard Auer, Alexander Ohorodnik, Johannes Rosenthal | 1985-10-29 |
| 4543217 | Process for making carboxylic acid halides | Heinz Erpenbach, Winfried Lork, Peter Prinz | 1985-09-24 |
| 4518538 | Process for making methyldichlorophosphane | Alexander Ohorodnik, Johannes Rosenthal, Stefan Schafer | 1985-05-21 |
| 4444624 | Process for separating acetone from carbonylation mixtures | Heinz Erpenbach, 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 | Heinz Erpenbach, 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 | Heinz Erpenbach, Winfried Lork, Peter Prinz | 1984-04-03 |
| 4430273 | Production of acetic anhydride | Heinz Erpenbach, Hans-Klaus Kubbeler, Klaus Schmitt | 1984-02-07 |
| 4414160 | Process for making carboxylic acid halides | Heinz Erpenbach, Winfried Lork, Peter Prinz | 1983-11-08 |
| 4352761 | Production of acetyl chloride | Heinz Erpenbach, Winfried Lork, Peter Pring | 1982-10-05 |
| 4351972 | Process for making anhydrous alkyl iodides | Hans-Klaus Kubbeler, Heinz Erpenbach, Klaus Schmitz | 1982-09-28 |
| 4333884 | Production of acetic anhydride | Hans-Klaus Kubbeler, Heinz Erpenbach, Klaus Schmitz | 1982-06-08 |
| 4319038 | Production of 1,1-diacetoxyethane | Hans-Klaus Kubbeler, Heinz Erpenbach, George Kohl | 1982-03-09 |
| 4318865 | Production of 2-chloroformylethylmethylphosphinic acid chlorides | Alexander Ohorodnik, Hubert Neumaier | 1982-03-09 |