Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10993037 | Acoustic converter and sound output device | Takehiro Miyagawa | 2021-04-27 |
| 8948439 | Acoustic conversion device and acoustic conversion device assembly method | Koji Matsuda, Koji Nageno, Takeshi Hara, Takahiro Suzuki, Takayuki Ishii +1 more | 2015-02-03 |
| 8634587 | Acoustic conversion device | Koji Matsuda, Koji Nageno, Takeshi Hara, Takahiro Suzuki, Takayuki Ishii +1 more | 2014-01-21 |
| 8630439 | Acoustic conversion device and acoustic conversion device assembly method | Koji Matsuda, Koji Nageno, Takeshi Hara, Takahiro Suzuki, Takayuki Ishii +1 more | 2014-01-14 |
| 8588456 | Acoustic conversion device | Koji Matsuda, Kenji Hiraiwa, Takayuki Ishii, Koji Nageno, Takeshi Hara +1 more | 2013-11-19 |
| 8204476 | Portable telephone and electronic device | Junji Morimoto, Kenji Shintani, Katsunori Ishii, Masashi Torimoto, Takashi Yamaguchi +1 more | 2012-06-19 |