Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6836551 | Loudspeaker | Shuji Saiki, Hiroyuki Takewa, Satoshi Koura | 2004-12-28 |
| 6757404 | Loud speaker, diaphragm and process for making the diaphragm | Hiroyuki Takewa, Mikio Iwasa, Shinya Tabata, Shinya Mizone, Yoshiyuki Takahashi +5 more | 2004-06-29 |
| 6747395 | Piezoelectric loudspeaker | Kazue Satoh, Hiroyuki Takewa, Mikio Iwasa | 2004-06-08 |
| 6700987 | Loudspeaker | Shuji Saiki, Hiroyuki Takewa | 2004-03-02 |