Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12191982 | Optical transmission device | NOBUYUKI FUKUCHI, Tomoaki Watanabe | 2025-01-07 |
| 11909515 | Optical transmission system and receiving device | Tomoaki Watanabe, Makoto Hasegawa, Yoshito Kachita | 2024-02-20 |
| 10461879 | Device and method for transmitting wavelength division multiplexed optical signal | Masahiro Yuki | 2019-10-29 |
| 9900089 | Optical transmission device and method for checking optical connection in optical transmission device | Masahiro Yuki, Yoshinobu Matsukawa | 2018-02-20 |
| 7394536 | Method and apparatus for inspecting front surface shape | Yoshiyuki Sonda, Kimiaki Oto, Munehisa Kato | 2008-07-01 |