Issued Patents 2022
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11528080 | Optical transmission system and failure diagnosis method for optical transmission system | Toshiyuki Oka, Takeshi Seki, Toshihiko Seki | 2022-12-13 |
| 11424824 | OSNR spectrum estimation apparatus, OSNR spectrum estimation method, and program | Kohei Saito, Takeshi Seki, Tsutomu Kubo | 2022-08-23 |
| 11379801 | Maintenance support system and maintenance support method | Yoshiyasu Fujiwara, Kazunori Oda, Yoshio Miyamae | 2022-07-05 |
| 11362894 | Wiring management system and wiring management method | Yoshihiko Uematsu, Hiroshi Yamamoto, Katsuhiro Araya, Toshiyuki Oka | 2022-06-14 |
| 11265628 | Optical transmission system and optical transmission method | Katsuhiro Araya, Yoshihiko Uematsu, Toshiyuki Oka, Hiroshi Yamamoto | 2022-03-01 |
| 11251877 | Optical reception device | Hiroshi Yamamoto, Katsuhiro Araya, Yoshihiko Uematsu, Toshiyuki Oka | 2022-02-15 |