Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4547142 | Process and apparatus for producing plastic pipe | Clemens Arenhovel, Ali-Maher Onallah, Volkmar Schmidt | 1985-10-15 |
| 4523036 | Process for the preparation of aldehydes | Boy Cornils, Josef Hibbel, Bernhard Lieder, Volkmar Schmidt, Ernst Wiebus +1 more | 1985-06-11 |
| 4402860 | Process for demetallizing primary products of the oxo synthesis | Josef Meis, Volkmar Schmidt, Hans Tummes | 1983-09-06 |