Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4906437 | Corrosion resistant hot and cold forming parts of Ni-Cr-Mo alloy and method of making same | Ulrich Heubner, Michael Köhler, Ernst Wallis | 1990-03-06 |
| 4876065 | Corrosion-resisting Fe-Ni-Cr alloy | Ernst Wallis, Michael Köhler, Ulrich Heubner, Rolf Kirchheiner | 1989-10-24 |
| 4436790 | Gold-colored coin material | Bruno Prinz, Gunther Rudolph, Ulrich Heubner, Hugo Zoebe | 1984-03-13 |
| 4401488 | Gold-colored coin material | Bruno Prinz, Gunther Rudolph, Ulrich Heubner, Hugo Zoebe | 1983-08-30 |