Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5573572 | Process for the production of tantalum-niobium concentrates | Kurt Tolle, Jochen Weber, Klaus Rieger | 1996-11-12 |
| 5209910 | Process for the recovery and separation of tantalum and niobium | Walter Bludssus | 1993-05-11 |
| 5068097 | Highly pure tantalum pentoxide and a process for its preparation | Walter Bludssus | 1991-11-26 |
| 4512958 | Method of recovering molybdenum oxide | Gunter Bauer | 1985-04-23 |
| 4379127 | Method of recovering molybdenum oxide | Gunter Bauer | 1983-04-05 |
| 4338537 | Synchronous turbine type electric motor | Franz Spirk | 1982-07-06 |
| 4275525 | Housing with motor and solar cell | Diether Geisler | 1981-06-30 |
| 4211946 | Asynchronous electric machine | Franz Spirk | 1980-07-08 |