Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5506711 | Star type multi-stage network | — | 1996-04-09 |
| 5438444 | Optical routing system | Takashi Tayonaka, Shinji Tsuji | 1995-08-01 |
| 5323258 | Homodyne optical receiver equipment | Hideaki Tsushima, Shinya Sasaki, Shigeki Kitajima, Katsuhiko Kuboki | 1994-06-21 |
| 5321540 | Optical frequency division multiplexing network | Atsushi Takai, Akihiko Takase | 1994-06-14 |
| 5142402 | Polarization diversity optical receiving apparatus and method | Hideaki Tsushima, Shinya Sasaki | 1992-08-25 |