Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814027 | Fe-Pt-Nb permanent magnet with an ultra-high coercive force and a large maximum energy product | Hakaru Masumoto, Kiyoshi Watanabe | 1989-03-21 |
| D281597 | Loudspeaker | — | 1985-12-03 |