Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11581890 | Switching apparatus and switching method | — | 2023-02-14 |
| 8385379 | Optical semiconductor device and pumping light source for optical fiber amplifier | Junji Yoshida, Naoki Tsukiji, Hidehiro Taniguchi, Satoshi Irino, Hirokazu Itoh +2 more | 2013-02-26 |