Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6587571 | Speaker | Ikuo Shinohara, Kenji Tokushige | 2003-07-01 |
| 6542617 | Speaker | Kenji Tokushige, Ikuo Shinohara | 2003-04-01 |
| 6356643 | Electro-acoustic transducer | Makoto Yamagishi | 2002-03-12 |
| 6175637 | Acoustic transducer | Makoto Yamagishi, Jun Kishigami, Takahiro Muraguchi, Kenji Tokushige, Ikuo Shinohara | 2001-01-16 |
| 6160894 | Speaker apparatus and sound reproduction system employing same | Jun Kishigami, Takahiro Muraguchi | 2000-12-12 |
| 6035052 | Acoustic transducer | Makoto Yamagishi, Jun Kishigami, Takahiro Muraguchi, Ikuo Shinohara | 2000-03-07 |
| 5909496 | Speaker apparatus | Jun Kishigami, Takahiro Muraguchi | 1999-06-01 |
| 5862237 | Speaker apparatus | Jun Kishigami, Takahiro Muraguchi | 1999-01-19 |
| 5835612 | Speaker apparatus | Makoto Yamagishi, Kazuo Azami | 1998-11-10 |
| 5115473 | Transducer having two ducts | Makoto Yamagishi, Kazuo Azami, Ikuo Shinohara | 1992-05-19 |