Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4729977 | Supported catalyst, process for its preparation and its use for the preparation of hydroxydiphenyl | Otto Immel, Hans-Helmut Schwarz | 1988-03-08 |
| 4293687 | Tetraalkylated biscyclohexylamine derivatives | Volker Serini, Hans-Josef Buysch | 1981-10-06 |
| 4186145 | Process for the hydrogenation of an aromatic amine and the supported ruthenium catalyst used in the process | — | 1980-01-29 |
| 4181810 | Process for the preparation of propane-1,3-diols, disubstituted in the 2-position | Otto Immel, Hans-Helmut Schwarz | 1980-01-01 |