Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837002 | Removal of chlorate from caustic soda | Wolfgang Kochanek, Bernd Leutner | 1989-06-06 |
| 4557818 | Gas-evolving metal electrode | Hans Roos, Hugo Boehn, Knut Bittler, Heinz Kilthau | 1985-12-10 |
| 4422921 | Bipolar electrodes with graphite as the carrier and their production | Hans Roos, Hugo Boehn, Knut Bittler | 1983-12-27 |