Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6079186 | Method of making vacuum-packaged, capacitor-grade tantalum powder | Ross W. Simon, Katsuo Iwabuchi, Hirobumi Ishikawa | 2000-06-27 |
| 5605561 | Tantalum powder and electrolytic capacitor using same | Katsuo Iwabuchi, Tadashi Komeya, Hiroshi Oki | 1997-02-25 |
| 4954169 | Fine-grained, high-purity earth acid metal powders, a process for their production and their use | — | 1990-09-04 |
| 4512805 | Valve metal powder doped with boron | Wolf-Wigand Albrecht, Uwe Papp | 1985-04-23 |
| 4347084 | Electrodes of sintered tantalum powder of fine grain size and process of production | Reinhard Hahn | 1982-08-31 |
| 4231790 | Process for the preparation of tantalum and niobium powders of improved efficiency | Reinhard Hahn | 1980-11-04 |