Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12063464 | Speaker bracket, speaker frame, and speaker | Ryu Ito, Shun Shirahata, Masato Tsuruya, Hiroyuki Dohi | 2024-08-13 |
| 11381893 | Speaker bracket, speaker frame, and speaker | Ryu Ito, Shun Shirahata, Masato Tsuruya, Hiroyuki Dohi | 2022-07-05 |
| D911155 | Bracket for automobile speaker | Ryu Ito, Shun Shirahata, Hiroyuki Dohi, Masato Tsuruya | 2021-02-23 |
| 10277976 | Speaker device having diaphragm with folded portion | Kenichi Oshima, Koji Takayama, Hirohito Ohno, Hiroyuki Dohi | 2019-04-30 |
| 10264347 | Two-way speaker device having diaphragm of second speaker unit inside voice coil bobbin of first speaker unit | Kenichi Oshima, Koji Takayama, Hirohito Ohno, Hiroyuki Dohi | 2019-04-16 |