Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D971176 | Acoustic transducer | Ryutaro Nakagawa, Daigaku Kumano, Ippei Yamakoshi | 2022-11-29 |
| 11503403 | Sound output device | Eiji Kuwahara, Takahiro Suzuki, Mizuki Shimamura | 2022-11-15 |