Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7326916 | Optical submarine transmission system | Akira Sugiyama | 2008-02-05 |
| 6775442 | Internal unit and submarine apparatus having system-unit coupling bars positioned away from a printed board | Yasushi Kaeriyama, Hiroshi Nakashima | 2004-08-10 |
| 6672801 | Submarine apparatus having a spacer mechanism between a body and a boot | Makoto Hayakawa, Shuichi Watanabe | 2004-01-06 |
| 6094519 | Gain equalizing device | — | 2000-07-25 |
| 5986215 | Submarine cable protecting device | Shuichi Watanabe, Kazuyuki Katogi, Michio Kondo | 1999-11-16 |
| 5642219 | Optical repeater | Shuji Ogiya, Kensuke Shinohara | 1997-06-24 |