Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7912239 | Flat speaker | Takeshi Nishimura, Masato Sorimachi, Yuuzo Nakajima, Hiroshi Ikeda, Akira Nishikawa +2 more | 2011-03-22 |
| 7907742 | Exciter for directly vibrating board and speaker apparatus used the same | Yuichi Nakajima, Akira Nishikawa, Noboru Hidaka | 2011-03-15 |