Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9414151 | Speaker system | Toshiyuki Matsumura, Shuji Saiki | 2016-08-09 |
| 9319767 | Earphone | Atsushi Sakaguchi, Shuji Saiki, Toshiyuki Matsumura, Akiko Fujise | 2016-04-19 |
| 9131304 | Loudspeaker and equipment including the same | Atsushi Sakaguchi, Shuji Saiki, Toshiyuki Matsumura, Akiko Fujise, Takafumi Yuasa | 2015-09-08 |
| 9107005 | Speaker | Toshiyuki Matsumura | 2015-08-11 |
| 9094750 | Loudspeaker, inner-ear headphone including loudspeaker, and hearing aid including loudspeaker | Akiko Fujise, Shuji Saiki, Toshiyuki Matsumura, Atsushi Sakaguchi | 2015-07-28 |
| 9066183 | Piezoelectric speaker | — | 2015-06-23 |
| 7974423 | Loudspeaker system | Toshiyuki Matsumura, Shuji Saiki, Mitsukazu Kuze | 2011-07-05 |
| 7885425 | Electrodynamic electroacoustic transducer and electronic device | Toshiyuki Matsumura, Shuji Saiki, Koji Sano | 2011-02-08 |
| 7840022 | Speaker device | Toshiyuki Matsumura, Shuji Saiki, Mitsukazu Kuze | 2010-11-23 |
| 7477755 | Speaker system | Shuji Saiki, Mitsukazu Kuze, Toshiyuki Matsumura | 2009-01-13 |
| 7463747 | Loudspeaker system | Mitsukazu Kuze, Shuji Saiki, Toshiyuki Matsumura | 2008-12-09 |