Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6027670 | Rare earth hexaboride electron-emitting material | Shigeki Otani, Yoshio Ishizawa | 2000-02-22 |
| 5837165 | Rare earth hexaboride electron-emitting material | Shigeki Otani, Yoshio Ishizawa | 1998-11-17 |