Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12111224 | Optical transmission path inspecting system, and optical transmission path inspecting device | Yoshifumi Hishikawa, Tetsufumi Tsuzaki, Toshiyuki Miyamoto, Kenichiro Otsuka | 2024-10-08 |
| 10523317 | Measurement system and measurement method | Kazuya Masuda, Tomohiko Ueda, Tsuneari Ito, Kenichiro Otsuka, Yoshifumi Hishikawa +5 more | 2019-12-31 |