Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9635463 | Vibrating body for speaker device and speaker device | Haruki Hoshikawa, Yoshihiro Sato, Takanobu Saito | 2017-04-25 |
| 9521490 | Speaker diaphragm and production method for speaker diaphragm | Yoshihiro Sato, Hideki Takahashi | 2016-12-13 |