Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7118649 | Device and method for manufacturing speaker diaphragm, the diaphragm, and speaker | Shinya Mizone, Nobuo Nakamura, Kazuto Nakamura | 2006-10-10 |
| 5583944 | Speaker | Yoshinobu Sengiku, Asahiko Okada, Teru Kawahara, Manabu Muraoka, Eiichi Morimoto +1 more | 1996-12-10 |