Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7443081 | Multi-frequency transmission/reception apparatus | Kazuhiko Kamei, Takeharu Yamaguchi | 2008-10-28 |
| 7369461 | Acoustic transducer and underwater sounding apparatus | Kenichi Watanabe, Yasushi Nishimori, Kouzo Tokuyama, Koji Tokuda | 2008-05-06 |