Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6757404 | Loud speaker, diaphragm and process for making the diaphragm | Hiroyuki Takewa, Mikio Iwasa, Mitsukazu Kuze, Shinya Mizone, Yoshiyuki Takahashi +5 more | 2004-06-29 |
| 6680430 | Speaker edge, method of foam-molding the same, apparatus for foam-molding the same, speaker edge foam-molding system, and speaker employing the speaker edge | Shinya Mizone, Yoshiyuki Takahashi, Kiyoshi Ikeda, Hiroko Yamazaki, Shinji Okuda +1 more | 2004-01-20 |