Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11159886 | Acoustic device | Shigetoshi Hayashi, Ryutaro Watanabe, Tetsunori Itabashi, Toru Nakagawa | 2021-10-26 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11159886 | Acoustic device | Shigetoshi Hayashi, Ryutaro Watanabe, Tetsunori Itabashi, Toru Nakagawa | 2021-10-26 |