Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12301295 | Communication system and method for controlling communication system | Yutaka Yano, Yoshihisa Inada, Takehiro Nakano | 2025-05-13 |
| 11914191 | Optical branching/coupling device and optical branching/coupling method | — | 2024-02-27 |
| 11888583 | Integrated 3-way branching unit switch module having small footprint | Fatih Yaman, Shinsuke Fujisawa, Hussam G. Batshon, Takigawa Yoshinari, Takanori Inoue +2 more | 2024-01-30 |
| 11705971 | Submarine optical communication system and submarine branching apparatus | Eduardo Mateo Rodriguez | 2023-07-18 |
| 11700067 | Three-way branching unit switch module having small footprint | Fatih Yaman, Shinsuke Fujisawa, Hussam G. Batshon, Yoshinari Takigawa, Ryu Kurahashi +4 more | 2023-07-11 |
| 11438087 | Optical branching/coupling device and optical branching/coupling method | — | 2022-09-06 |
| 11159264 | Optical transmission device and optical transmission method | — | 2021-10-26 |
| 11082145 | Optical branching/coupling device and optical branching/coupling method | — | 2021-08-03 |
| 10855392 | High-density submarine ROADM unit with remote WSS redundancy | Eduardo Mateo Rodriguez, Takehiro Nakano | 2020-12-01 |
| 10715270 | Optical branching/coupling device and optical branching/coupling method | — | 2020-07-14 |
| 10348440 | Power supply path-switching device, power supply path-switching system, and power supply path-switching method | — | 2019-07-09 |
| 10153850 | Power feed line switching circuit, branching device, submarine cable system, and power feed line switching method | — | 2018-12-11 |
| 9912407 | Optical relay device, optical communication system, optical relay method, and storage medium | — | 2018-03-06 |
| 9866346 | Redundancy protection for reconfigurable optical add/drop multiplexing (ROADM) branching unit | Philip Nan Ji, Ting Wang | 2018-01-09 |
| 9813182 | Submarine reconfigurable optical add/drop multiplexer with passive branching unit | Philip Nan Ji, Ting Wang | 2017-11-07 |
| 9735914 | Mechanism for traffic privacy in reconfigurable add/drop multiplexer based submarine networks | Eduardo Mateo Rodriguez, Philip Nan Ji | 2017-08-15 |
| 9654209 | Low cost secure ROADM branching unit with redundancy protection | Philip Nan Ji, Ting Wang | 2017-05-16 |
| 9654246 | Low cost secure submarine ROADM branching unit using bidirectional wavelength-selective switch | Philip Nan Ji, Ting Wang | 2017-05-16 |
| 9414134 | Secure wavelength selective switch-based reconfigurable branching unit for submarine network | Ting Wang, Philip Nan Ji | 2016-08-09 |
| 9166726 | Diverging device with OADM function and wavelength division multiplexing optical network system and method therefor | — | 2015-10-20 |
| 9143845 | Branching units and power line monitoring methods | — | 2015-09-22 |
| 9106983 | Reconfigurable branching unit for submarine optical communication networks | Philip Nan Ji, Ting Wang | 2015-08-11 |
| 8989197 | Reconfigurable branching unit for submarine optical communication networks | Philip Nan Ji, Ting Wang | 2015-03-24 |
| 6600595 | Multi-stage optical amplifier apparatus having fiber grating with a cutoff wavelength less than the pump light wavelength | Kenichi Yoneyama | 2003-07-29 |