Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6290399 | Optical submarine branching unit | — | 2001-09-18 |
| 5666457 | Optical submarine repeater | Michio Kondo, Yasusi Kaeriyama | 1997-09-09 |
| 5642219 | Optical repeater | Kensuke Shinohara, Taiichi Takeda | 1997-06-24 |