Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7864977 | Voice coil assembly and loudspeaker using the same | Koichi Sadaie, Hiroyasu Kumo | 2011-01-04 |
| 7848536 | Voice coil assembly, loudspeaker using the same, and method for producing the same | Koichi Sadaie, Hiroyasu Kumo, Satofumi Nagaoka, Yoshinori Ujimoto, Kouichi Abe | 2010-12-07 |