Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10735685 | Control method of presented information, control device of presented information, and speaker | — | 2020-08-04 |
| 9554206 | Sound presentation device | Toshiyuki Matsumura, Mitsuru Endo, Aki Yoneda | 2017-01-24 |
| 9319767 | Earphone | Atsushi Sakaguchi, Shuji Saiki, Toshiyuki Matsumura, Sawako Kano | 2016-04-19 |
| 9131304 | Loudspeaker and equipment including the same | Atsushi Sakaguchi, Shuji Saiki, Toshiyuki Matsumura, Sawako Kano, Takafumi Yuasa | 2015-09-08 |
| 9094750 | Loudspeaker, inner-ear headphone including loudspeaker, and hearing aid including loudspeaker | Shuji Saiki, Sawako Kano, Toshiyuki Matsumura, Atsushi Sakaguchi | 2015-07-28 |
| 8989412 | Piezoelectric acoustic transducer | Toshiyuki Matsumura | 2015-03-24 |
| 8953823 | Piezoelectric speaker and piezoelectric speaker array | Toshiyuki Matsumura | 2015-02-10 |
| 8644527 | Piezoelectric acoustic transducer | Toshiyuki Matsumura, Kazue Satoh | 2014-02-04 |
| 8520869 | Piezoelectric acoustic transducer | — | 2013-08-27 |
| 8503700 | Piezoelectric acoustic transducer | Toshiyuki Matsumura | 2013-08-06 |
| 8428293 | Speaker device | Hiroyuki Takewa, Mikio Iwasa | 2013-04-23 |
| 8335333 | Speaker system | Shuji Saiki, Toshiyuki Matsumura | 2012-12-18 |