Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9330650 | Sound masking device and sound masking method | Toshiaki Ishibashi | 2016-05-03 |
| 9286880 | Masking sound outputting device and masking sound outputting method | Hiroaki Koga | 2016-03-15 |