Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10247203 | Noise reduction structure and supercharging device | Hiroyuki Hosoya, Kentaro Hayashi, Seokcheol Kim, Yoshihisa Ono, Yasuhiro Wada | 2019-04-02 |
| 8755557 | Loudspeaker diaphragm and loudspeaker including the loudspeaker diaphragm | Takeshi Fujitani, Ryoichi Takahashi, Ryosuke Sano | 2014-06-17 |
| 8036409 | Speaker cabinet and speaker using the same | Sadatoshi Hisamoto, Kosuke Heki, Koichi Sadaie, Hiroyuki Mizutani | 2011-10-11 |
| 7686128 | Speaker diaphragm and speaker | — | 2010-03-30 |
| 7631723 | Loudspeaker diaphragm and method for manufacturing the same | Toshihide Inoue | 2009-12-15 |
| 7567684 | Speaker diaphragm and speaker using the same | Sadatoshi Hisamoto, Takeru Inoue | 2009-07-28 |
| 6591938 | Speaker diaphragm | Toshihide Inoue | 2003-07-15 |
| 6378649 | Speaker member and manufacturing method thereof | Toshihide Inoue, Takashi Onogi, Kazumasa Takemura, Hiroyasu Kumo | 2002-04-30 |