Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12401378 | Optical communication system | — | 2025-08-26 |
| 9621291 | Optical communication cross-connection devices and signal processing method thereof | Kazuo Kubo, Kazuumi Koguchi, Yoshiaki Konishi | 2017-04-11 |
| 9246748 | Optical channel data unit switch with distributed control | Chunjie Duan, Ghulam Bhatti, Kieran Parsons, Kazuumi Koguchi | 2016-01-26 |
| 8718487 | Optical transmitter | Takashi Sugihara, Takashi Mizuochi, Yoshiaki Konishi | 2014-05-06 |
| 8463138 | Multi-value optical transmitter | Takashi Sugihara, Takashi Mizuochi | 2013-06-11 |