Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10070226 | Speaker device | — | 2018-09-04 |
| 9357303 | Speaker apparatus | Masataka Ogawa, Takeshi Oishi, Koji Suzuki | 2016-05-31 |
| 8909055 | Relay device and speaker apparatus | Yoshiaki Kawaida, Koji Suzuki, Masaki Yamamoto | 2014-12-09 |
| 7453610 | Color display system and image transforming device | Yoshifumi Shimodaira | 2008-11-18 |