Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5626724 | Recovery of N-ethylpiperazine by distillation | Douglas Hutton, Ernst Lang | 1997-05-06 |
| 4940805 | Preparation of 1,4-butanediol or tetrahydrofuran or both | Rolf Fischer, Hans-Juergen Gosch, Wolfgang Harder, Manfred Eggersdorfer, Lothar Franz +5 more | 1990-07-10 |
| 4788326 | Preparation of 4-pentenoates | Wolfgang Hoelderich, Wolfgang Richter, Hubert Lendle | 1988-11-29 |
| 4780448 | Preparation of a catalyst containing copper and silica | Franz J. Broecker, Rolf Fischer, Wolfgang Reiss, Rolf Schnabel, Hans-Martin Weitz | 1988-10-25 |
| 4772746 | Preparation of 4-pentenoates | Wolfgang Hoelderich, Rolf Fischer, Hubert Lendle | 1988-09-20 |