Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7831118 | Coarse wavelength division multiplexing optical transmission system, and coarse wavelength division multiplexing optical transmission method | Yoichi Oikawa, Takashi Toyomaki | 2010-11-09 |
| 5001726 | Circuit for generating discrimination voltage level | Masaaki Kawai, Hisako Watanabe | 1991-03-19 |
| 4935701 | Phase shift circuit | Masaaki Kawai, Hisako Watanabe, Haruo Yamashita | 1990-06-19 |
| 4935920 | Drop/insert processing circuit | Atsuki Taniguchi, Hidetoshi Naitou, Ryuichi Kondo | 1990-06-19 |