Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7284637 | Low-frequency sound reproducing speaker apparatus | Yasuhisa Abe, Chuichi Endo, Koji Nakane | 2007-10-23 |
| D487738 | Speaker | Takekazu Iijima | 2004-03-23 |
| D487076 | Speaker | Koji Nakane | 2004-02-24 |
| D472545 | Speaker | Takekazu Iijima, Koji Nakane | 2003-04-01 |