Issued Patents 2023
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11815421 | Acoustic mode propagation speed measurement method and acoustic mode propagation speed measurement device | Takashi Matsui, Kyozo Tsujikawa, Kazuhide NAKAJIMA | 2023-11-14 |
| 11722223 | Optical communication system and optical communication method | Takashi Matsui, Taiji SAKAMOTO, Kazuhide NAKAJIMA | 2023-08-08 |