Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5348657 | Process for the separation of catalyst-free working solution from the hydrogenation circuit of the anthraquinone process for the production of hydrogen peroxide | Hubert Eickhoff, Rudiger; Schirrmacher, Hans-Martin Huber, Ralf Godecke | 1994-09-20 |
| 4435563 | Process for the recovery of pure hellebrin | Gerhard Oepen, Norbert Seifried, Jurgen Engel, Otto Isaac | 1984-03-06 |