Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6963654 | Diaphragm, flat-type acoustic transducer, and flat-type diaphragm | Hiromi Sotme | 2005-11-08 |
| 6593847 | Planar acoustic converting apparatus | Masashi Hori, Takeshi Nishimura, Kenji Iizuka, Masayuki Ishiwa | 2003-07-15 |
| 6480614 | Planar acoustic transducer | Sakuzo Denda | 2002-11-12 |