Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7925040 | Speaker | Hideo Kitazawa, Takamasa Kaneko, Kenji Yokoyama | 2011-04-12 |
| 7864976 | Speaker | Hideo Kitazawa, Takamasa Kaneko, Kenji Yokoyama | 2011-01-04 |
| 7792318 | Speaker | Shinsuke Takahashi, Kenji Yokoyama | 2010-09-07 |