Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7302176 | Optical network | Shinji Sakano, Yasushi Sawada, Hideaki Tsushima | 2007-11-27 |
| 6990294 | Optical network system with quality control function | Masaki Miyagami, Shinji Sakano | 2006-01-24 |