Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11212634 | Sound signal processing device, sound adjustment method, and medium | Katsumi Kobayashi, Kazutaka Abe | 2021-12-28 |
| 11128975 | Acoustic system and acoustic control device | Katsumi Kobayashi, Kazutaka Abe | 2021-09-21 |