Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6691832 | Speaker | Shigeru Sugiyama, Naohiro Fujinami, Tomoyuki Sato, Yoshio Imahori | 2004-02-17 |
| 6674872 | Speaker | Naohiro Fujinami, Tomoyuki Sato | 2004-01-06 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6691832 | Speaker | Shigeru Sugiyama, Naohiro Fujinami, Tomoyuki Sato, Yoshio Imahori | 2004-02-17 |
| 6674872 | Speaker | Naohiro Fujinami, Tomoyuki Sato | 2004-01-06 |