Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9756426 | Loudspeaker | Koichi Nakayama, Satoshi Koura, Kazuhiro Oshika, Mitsukazu Kuze, Tomonori Shibuya | 2017-09-05 |
| 8135164 | Speaker | Shoji Tanaka, Takafumi Yuasa | 2012-03-13 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9756426 | Loudspeaker | Koichi Nakayama, Satoshi Koura, Kazuhiro Oshika, Mitsukazu Kuze, Tomonori Shibuya | 2017-09-05 |
| 8135164 | Speaker | Shoji Tanaka, Takafumi Yuasa | 2012-03-13 |