Issued Patents 2004
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6763120 | Speaker | Shigeru Sugiyama, Hajime Kitamura | 2004-07-13 |
| 6704430 | Electroacoustic transducer | Hiroshi Fujinami, Yoshiharu Oishi, Takahiro Sone | 2004-03-09 |
| 6691832 | Speaker | Fuminori Moritake, Shigeru Sugiyama, Naohiro Fujinami, Tomoyuki Sato | 2004-02-17 |
| 6675930 | Speaker holder | Shigeru Sugiyama, Hajime Kitamura | 2004-01-13 |
| 6678383 | Capacitor microphone | Motoaki Ito | 2004-01-13 |
| 6678388 | Electroacoustic transducer | Youichi Gotoh, Yoshiharu Oishi, Kazuyasu Ono | 2004-01-13 |