Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11076233 | Sound generation device | Satoru Hiwatari, Koji Takayama, Hiroyuki Kobayashi | 2021-07-27 |
| 11070908 | Sound generator for mobile entities | Satoru Hiwatari, Takayuki NEGISHI, Hiroyuki Kobayashi | 2021-07-20 |
| D911155 | Bracket for automobile speaker | Hayami Kondo, Ryu Ito, Shun Shirahata, Masato Tsuruya | 2021-02-23 |