Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5382716 | Decyl alcohol mixtures, phthalic obtainable therefrom, and their use as plasticizers | Helmut Bahrmann, Wolfgang Greb, Peter Heymanns, Jurgen Szameitat, Thomas Muller +1 more | 1995-01-17 |
| 5369162 | Decyl alcohol mixtures, phthalic esters obtainable therefrom and their use as plasticizers | Helmut Bahrmann, Wolfgang Greb, Peter Heymanns, Jurgen Szameitat, Thomas Muller +1 more | 1994-11-29 |
| 5367107 | Process for the preparation of aldehydes | Helmut Bahrmann | 1994-11-22 |
| 5354911 | Process for the preparation of unsaturated ethers | Jurgen Weber, Helmut Springer | 1994-10-11 |
| 5347045 | Sulfonated 2,2'-bis (diphenylphosphinomethyl)-1,1'-binaphthalenes, process for their preparation and their use in a process for the hydroformylation of olefinically unsaturated compounds | Wolfgang Anton Herrmann, Rainer Manetsberger, Helmut Bahrmann, Christian Kohlpaintner | 1994-09-13 |
| 5294415 | Process for the separation and recovery of rhodium from the products of the oxo synthesis | Ludger Bexten, Dieter Kupies | 1994-03-15 |
| 5268514 | Decyl alcohol mixtures, phthalic esters obtainable therefrom and their use as plasticizers | Helmut Bahrmann, Wolfgang Greb, Peter Heymanns, Jurgen Szameitat, Thomas Muller +1 more | 1993-12-07 |
| 5264600 | Process for the recovery of rhodium from residues of the distillation of products of the oxo synthesis | Helmut Springer | 1993-11-23 |
| 5182400 | Process for the preparation of esters of 5-alkylpyridine-2,3-dicarboxylic acid | Jurgen Weber, Helmut Springer | 1993-01-26 |
| 5151537 | Process for the recovery of rhodium from the residues of distillation processes | Helmut Springer | 1992-09-29 |
| 5145488 | Process for the preparation of mixtures of oil-soluble iron and magnesium salts of saturated aliphatic monocarboxylic acids and their use | Jurgen Weber, Werner De Win, Wolfgang Nierhaus | 1992-09-08 |
| 5091546 | Novel rhodium recovery | Helmut Springer | 1992-02-25 |
| 5085835 | Process for recovering rhodium | Jurgen Weber, Ludger Bexten, Dieter Kupies, Helmut Springer | 1992-02-04 |
| 5072037 | Process for the preparation of 2-(4-chlorophenyl)-3-methylbutyric acid | Jurgen Weber, Helmut Springer | 1991-12-10 |
| 5072058 | Process for the preparation of 2,2-dimethylpropane-1,3-diol | Georg Dambkes, Franz Thonnessen, Helmut Springer | 1991-12-10 |
| 5064508 | Process for the separation of 2-methylalkanals from isomers thereof | Jurgen Weber, Helmut Springer | 1991-11-12 |
| 5039497 | Process for separating copper from aqueous base solutions | Jurgen Weber, Werner De Win | 1991-08-13 |
| 4950800 | Process for the preparaton of 2-methylbutanal | Jurgen Weber, Helmut Springer | 1990-08-21 |
| 4918247 | Process for the preparation of 2,2-dimethylpropanediol-1,3 | Norbert Breitkopf, Wolfgang Hofs, Heinz Kalbfell, Franz Thonnessen, Helmut Springer | 1990-04-17 |
| 4885383 | Process for the preparation of carboxylic acid methyl esters | Jurgen Weber, Helmut Springer | 1989-12-05 |
| 4710321 | Quaternary ammonium salts of sulfonated triarylphosphines and process for the production thereof | Helmut Bahrmann, Boy Cornils, Wolfgang Lipps, Helmut Springer | 1987-12-01 |
| 4673535 | Quaternary ammonium salts of sulfonated triarylphosphines and process for the production thereof | Helmut Bahrmann, Boy Cornils, Wolfgang Lipps, Helmut Springer | 1987-06-16 |
| 4483802 | Process for the preparation of sulfonated aryl phosphine | Roderich Gartner, Boy Cornils, Helmut Springer | 1984-11-20 |