Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6568135 | Sound absorbing structure | Yoshiaki Yokoyama, Shinji Migita, Shinichi Okuzono, Takuya Fujimoto, Yukio Hattori | 2003-05-27 |
| 6035965 | Sound absorbing body, sound absorbing board, and sound absorbing unit | Shinta Yamamura, Naoyuki Furuta, Tadanori Mizukami, Yutaka Tasaki, Takashi Mikami | 2000-03-14 |
| 5854453 | Sound absorbing body, sound absorbing plate, and sound absorbing unit | Shinta Yamamura, Naoyuki Furuta, Tadanori Mizukami, Yutaka Tasaki, Takashi Mikami | 1998-12-29 |
| 5532440 | Light transmissive sound absorbing member | — | 1996-07-02 |