Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7133610 | Optical sender, terminal device, and optical communication system each having the optical sender | Motoyoshi Sekiya, Keisuke Imai | 2006-11-07 |
| 6590686 | Optical transmitter | Motoyoshi Sekiya, Tetsuya Kiyonaga | 2003-07-08 |
| 6483625 | WDM optical transmission apparatus | Motoyoshi Sekiya, Tetsuya Kiyonaga | 2002-11-19 |