Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9756426 | Loudspeaker | Hiroko Tsutsumi, Koichi Nakayama, Satoshi Koura, Mitsukazu Kuze, Tomonori Shibuya | 2017-09-05 |
| 8818006 | Speaker system, electronic apparatus using same, and mobile body device | Kenji Yamauchi, Masatoshi Okuyama, Shoji Nakajima, Satoshi Takayama, Satoshi Koura +2 more | 2014-08-26 |
| 6188774 | Loudspeaker | Takashi Sabato | 2001-02-13 |