Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4943549 | Supported ruthenium catalyst, its preparation and its use in the preparation of optionally substituted cyclohexylamine and optionally substituted dicyclohexylamine | Hans-Helmut Schwarz, Reinhard Thiel | 1990-07-24 |
| 4902661 | Rhodium catalysts, process for their preparation and process for the preparation of substituted or unsubstituted diphenylamine by using the rhodium catalysts | Hans-Helmut Schwarz | 1990-02-20 |
| 4729977 | Supported catalyst, process for its preparation and its use for the preparation of hydroxydiphenyl | Oskar Weissel, Hans-Helmut Schwarz | 1988-03-08 |
| 4514578 | Process for the preparation of trimethylolpropane | Hans-Helmut Schwarz, Hein Quast, Eberhard Bandtel | 1985-04-30 |
| 4247485 | Process for the preparation of 2,2-dimethylolalkanals | Hans-Helmut Schwarz, Hein Quast | 1981-01-27 |
| 4233247 | Process for the preparation of 2,2-dimethylolalkanals | Hans-Helmut Schwarz | 1980-11-11 |
| 4181810 | Process for the preparation of propane-1,3-diols, disubstituted in the 2-position | Hans-Helmut Schwarz, Oskar Weissel | 1980-01-01 |