Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D736743 | Loudspeaker with amplifier | Hiroshi Kowaki, Kiyosei Shibata | 2015-08-18 |
| D514088 | Loudspeaker | Hiroshi Kowaki, Yoshihito Takeuchi | 2006-01-31 |
| D498225 | Amplifier | Yoshihito Takeuchi | 2004-11-09 |
| D497358 | Speaker | Yoshihito Takeuchi, Masayuki Haruta | 2004-10-19 |
| D491921 | Subwoofer | Yoshihito Takeuchi | 2004-06-22 |