Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7433486 | Speaker and manufacturing method for the same | Satoshi Chiba, Kunio Mitobe | 2008-10-07 |
| 6804366 | Speaker apparatus | Osamu Takahashi, Masanori Ito | 2004-10-12 |
| 6754362 | Speaker and speaker system | Osamu Takahashi, Masanori Ito, Kunio Mitobe | 2004-06-22 |