Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4747914 | Process for the purification of 1,2-dichloroethane | Peter Schwarzmaier, Walter Frohlich, Wenzel Kuhn, Josef Riedl, Iwo Schaffelhofer +1 more | 1988-05-31 |
| 4225520 | Process for the manufacture of vinyl chloride | Josef Riedl, Walter Frohlich | 1980-09-30 |