Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7120271 | Internal magnetic circuit and loudspeaker system incorporating the same | Hiroyuki Kobayashi, Hiroyuki Dohi, Takashi Ohyaba | 2006-10-10 |
| 5848173 | Surroundless loudspeaker | Yoko Sato, Satoshi Kumada, Ziging Zhang, Junko Oba, Shinji Koyano +9 more | 1998-12-08 |
| 5719946 | Loudspeaker for higher audio frequencies and a manufacturing method thereof | Tomohiro Suenaga, Masaharu Yoneyama, Takanobu Saito | 1998-02-17 |