Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11197091 | Sound pickup device and sound pickup method | — | 2021-12-07 |
| 10979839 | Sound pickup device and sound pickup method | Tetsuto Kawai, Mikio Muramatsu, Takayuki Inoue | 2021-04-13 |
| 10893358 | Gain adjustment device, remote conversation device, and gain adjustment method | Mikio Muramatsu | 2021-01-12 |