Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5531962 | Cadmium-free silver alloy brazing solder, method of using said solder, and metal articles brazed with said solder | Wolfgang Weise, Alexander Voelcker, Dieter Kaufmann, Willi Malikowski, Harald Krappitz | 1996-07-02 |
| 5352542 | Use of silver alloys as cadium-free brazing solder | Alexander Voelcker, Sigurd Joensson, Dieter Kaufmann, Georg Ptaschek, Wolfgang Kaster | 1994-10-04 |
| 5341981 | Use of a cadmium-free silver alloy as brazing solder (III) | Wolfgang Weise, Alexander Voelcker, Dieter Kaufmann, Willi Malikowski, Harald Krappitz | 1994-08-30 |