Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7362874 | Speaker system having a front speaker integrated with a reflection-type surround speaker | Jin Sub LEE, Masao Gibo, Hyeon-goo Yoon | 2008-04-22 |
| 7120271 | Internal magnetic circuit and loudspeaker system incorporating the same | Hiroyuki Kobayashi, Hiroyuki Dohi, Shouichiro Terauchi | 2006-10-10 |
| 6792122 | Acoustic device | Haruo Okada, Shunichi Takahashi, Tohru Nagatani, Katsutoki Hanayama | 2004-09-14 |
| 6144753 | Damper for a speaker apparatus | Shunichi Takahashi, Showichiro Terauchi, Takanobu Saito, Tatsuya Ando, Yoshiya Usami +1 more | 2000-11-07 |
| 5848173 | Surroundless loudspeaker | Yoko Sato, Satoshi Kumada, Ziging Zhang, Junko Oba, Shinji Koyano +9 more | 1998-12-08 |
| 5590208 | Speaker system | Shinji Koyano, Koushirou Kogure, Makoto Sakakibara, Katsutoki Hanayama | 1996-12-31 |
| 4504704 | Loudspeaker system | Minoru Kamishima, Shozo Kinoshita, Tetsuo Kawamura, Hiroaki Matsuhisa | 1985-03-12 |
| 4413160 | Ribbon-type loudspeaker | Yoichi Suzuki | 1983-11-01 |