Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11466042 | Method for producing ferric citrate hydrate | Takayuki Miyaoku | 2022-10-11 |
| 11424824 | OSNR spectrum estimation apparatus, OSNR spectrum estimation method, and program | Hiroki Kawahara, Takeshi Seki, Tsutomu Kubo | 2022-08-23 |
| 11329445 | Optical amplifier, optical transmission system, and optical cable failure part measurement method | Takashi Kotanigawa, Tsutomu Kubo | 2022-05-10 |