Issued Patents 2022
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11398711 | Multicore optical fiber amplifier and optical amplification method using multicore optical fiber amplification medium | Shigeru Nakamura, Shigeyuki Yanagimachi | 2022-07-26 |
| 11374377 | Optical amplifying apparatus and method of amplifying optical signal | Shigeyuki Yanagimachi, Shigeru Nakamura, Keiichi Matsumoto | 2022-06-28 |
| 11329444 | Optical amplifier and control method therefor | Shigeru Nakamura, Shigeyuki Yanagimachi, Keiichi Matsumoto | 2022-05-10 |
| 11264776 | Optical amplifier, optical network including the same, and method for amplifying optical signal | Shigeru Nakamura | 2022-03-01 |