Issued Patents All Time
Showing 151–175 of 244 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5453516 | Preparation of 5-membered ring heterocycles | Rolf Pinkos | 1995-09-26 |
| 5453535 | Preparation of .alpha.,.omega.-dicarboxylic acid diesters | — | 1995-09-26 |
| 5436335 | Preparation of 2,6-dimethylmorpholine from N-(2-hydroxypropyl)-2,6-dimethylmorpholine | Rolf Pinkos, Hans Rupert Merkle | 1995-07-25 |
| 5434273 | Preparation of N-substituted 2-pyrrolidones | Hans-Juergen Weyer | 1995-07-18 |
| 5416240 | Preparation of poloxy-alkylene glycols | Hans-Juergen Weyer, Gerhard Jeschek, Franz Merger, Herbert Mueller | 1995-05-16 |
| 5414097 | Purification of esters of tetrahydro-pyran-4-carboxylic acid | Norbert Goetz, Thomas Kuekenhoehner, Harald Rust, Werner Schnurr | 1995-05-09 |
| 5414143 | Preparation of polyoxyalkylene glycol monoethers of monohydric alcohols | Hans-Juergen Weyer, Gerhard Jeschek, Herbert Mueller | 1995-05-09 |
| 5412120 | Preparation of carboxylic esters | Norbert Goetz, Thomas Kuekenhoehner, Werner Schnurr | 1995-05-02 |
| 5395959 | Adjustment of the average molecular weight of polyoxyalkylene glycols and polyoxyalkylene derivatives in the heteropolyacid-catalyzed polymerization of cyclic ethers and/or acetals with ring cleavage | Hans-Juergen Weyer, Gerhard Jeschek, Herbert Mueller | 1995-03-07 |
| 5391771 | Hydrogenation of citric acid | Hans-Juergen Weyer, Christoph Sigwart | 1995-02-21 |
| 5391734 | Preparation of N-(2-hydroxypropyl)-2,6-dimethylmorpholine | Rolf Pinkos, Hans Rupert Merkle | 1995-02-21 |
| 5387701 | Preparation of 4-hydroxymethyltetrahydropyran | Hans-Juergen Weyer, Werner Schnurr, Norbert Goetz, Thomas Kuekenhoehner | 1995-02-07 |
| 5382740 | Continuous production of cyclohexene from cyclohexyl esters | Rolf Pinkos, Roman Dostalek | 1995-01-17 |
| 5371297 | Preparation of aldehydes | — | 1994-12-06 |
| 5371242 | Preparation of products of the reduction of 4-hydroxybutyric acid derivatives | Hans-Juergen Weyer, Werner Schnurr, Norbert Goetz, Thomas Kuekenhoehner | 1994-12-06 |
| 5371246 | Preparation of tetrahydropyran-4-carboxylic acid and esters thereof | Dirk Borchers, Norbert Goetz, Thomas Kuekenhoehner, Werner Schnurr | 1994-12-06 |
| 5350863 | Preparation of 3-(2'-oxyethyl)dihydro-2(3H)furanones | Thomas Kuekenhoehner, Norbert Goetz, Werner Schnurr, Dirk Borchers | 1994-09-27 |
| 5342488 | Separation of 1,4-butanediol from hydrogenation mixtures | Hans-Juergen Gosch, Harald Rust, Claus Hechler, Rolf Pinkos | 1994-08-30 |
| 5286875 | Preparation of 5-hydroxyethylpyrrolidones | — | 1994-02-15 |
| 5276165 | Preparation of N-substituted lactams | Hans-Juergen Weyer | 1994-01-04 |
| 5258555 | Synthesis of cycloalkanols | Rolf Pinkos | 1993-11-02 |
| 5189182 | Preparation of 5-methylbutyrolactone | Rudolf Kummer, Heinz-Walter Schneider, Werner Bertleff, Uwe Vagt, Fritz Naeumann +2 more | 1993-02-23 |
| 5162552 | Preparation of 4-acetals of butene-1,4-dial and novel acetals of butene-1,4-dial | Franz Merger, Hans Horler, Juergen Frank | 1992-11-10 |
| 5157127 | Preparation of N-substituted pyrrolidones | Hans-Juergen Weyer, Wolfgang Harder | 1992-10-20 |
| 5144061 | Preparation of alkenecarboxylic esters | Wolfgang Hoelderich, Fritz Naeumann | 1992-09-01 |