Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D679682 | Earphone | Yosuke Shimizu, Naoki Sugiyama, Sohei Kitayama, So Morimoto, Naoto Shimizu +1 more | 2013-04-09 |
| D637180 | Earphone | Yosuke Shimizu, Naoki Sugiyama, Sohei Kitayama, So Morimoto, Naoto Shimizu | 2011-05-03 |
| D610129 | Earphone | Yosuke Shimizu, Naoki Sugiyama, Naoto Shimizu, So Morimoto, Sohei Kitayama | 2010-02-16 |
| D598431 | Earphone | — | 2009-08-18 |
| D593975 | Television receiver | Hiroaki Yokota, Takuo Ikeda, Yasuhide Hosoda, Eijiro Mori, Hidenori Karasawa | 2009-06-09 |
| D591722 | Earphone | — | 2009-05-05 |
| D591721 | Earphone | — | 2009-05-05 |
| D589493 | Earphone | — | 2009-03-31 |
| D588100 | Headphone | Yasuhide Hosoda | 2009-03-10 |
| D587685 | Earphone | — | 2009-03-03 |
| D587248 | Earphone | — | 2009-02-24 |
| D587247 | Earphone | — | 2009-02-24 |
| D587249 | Earphone | — | 2009-02-24 |
| D573561 | Television receiver | Hiroaki Yokota, Takuo Ikeda, Yasuhide Hosoda, Eijiro Mori, Hidenori Karasawa | 2008-07-22 |
| D567216 | Wireless headset | — | 2008-04-22 |
| D525612 | Audio player | — | 2006-07-25 |