Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8041071 | Diaphragm and speaker device | Sinsuke Konuma | 2011-10-18 |
| 8027503 | Diaphragm for speaker device, speaker device and mobile phone | Shinsuke Konuma, Kunio Mitobe | 2011-09-27 |