Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8801829 | Method for production of niobium and tantalum powder | Helmut Haas, Ulrich Bartmann, Nobuyuki Sato | 2014-08-12 |
| 7824463 | Method for the production of niobium and tantalum powder | Helmut Haas, Ulrich Bartmann, Nobuyuki Sato | 2010-11-02 |
| 5605561 | Tantalum powder and electrolytic capacitor using same | Katsuo Iwabuchi, Hiroshi Oki, Dieter Behrens | 1997-02-25 |