Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8345897 | Electromagnetic conversion unit | Masanori Takahashi | 2013-01-01 |
| D647078 | Diaphragm for a speaker | Shunji Yoshida | 2011-10-18 |
| 7424118 | Moving object equipped with ultra-directional speaker | Shunji Yoshida, Hiroshi Okuno, Kazuhiro Nakadai, Hiroshi Tsujino | 2008-09-09 |