Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6920957 | Loudspeaker diaphragm | Sawako Usuki | 2005-07-26 |
| 6920230 | Electromagnetic transducer and portable communication device | Sawako Usuki | 2005-07-19 |
| 6856691 | Electronic apparatus including loudspeaker system | Sawako Usuki, Tetsuo Murakami | 2005-02-15 |