Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4468783 | Electrode for arc furnaces | Hanns-Georg Bauer, Dieter Zollner, Josef Otto, Josef Muhlenbeck, Friedrich Rittmann +2 more | 1984-08-28 |
| 4466105 | Electrode for arc furnaces | Hanns-Georg Bauer, Dieter Zollner, Josef Otto, Josef Muhlenbeck, Friedrich Rittmann +2 more | 1984-08-14 |
| 4425657 | Electrode for arc furnaces | Hanns-Georg Bauer, Dieter Zollner, Josef Otto, Josef Muhlenbeck, Friedrich Rittmann +2 more | 1984-01-10 |