Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6035965 | Sound absorbing body, sound absorbing board, and sound absorbing unit | Kyoji Fujiwara, Naoyuki Furuta, Tadanori Mizukami, Yutaka Tasaki, Takashi Mikami | 2000-03-14 |
| 5920041 | Structure for mounting sound absorbing member on top portion of sound insulation wall and method of mounting the same | Naoyuki Furuta, Tadanori Mizukami, Yutaka Tasaki, Takashi Mikami | 1999-07-06 |
| 5854453 | Sound absorbing body, sound absorbing plate, and sound absorbing unit | Kyoji Fujiwara, Naoyuki Furuta, Tadanori Mizukami, Yutaka Tasaki, Takashi Mikami | 1998-12-29 |
| 5741369 | Plate-like body structure with solar battery for sound insulation wall | Naoyuki Furuta, Tadanori Mizukami, Yutaka Tazaki, Takashi Mikami | 1998-04-21 |
| 5619829 | Sound insulating wall and method of installing the same | Tokio Tan, Kikuo Kazi, Naoyuki Furuta, Tadanori Mizukami | 1997-04-15 |
| 4899846 | Sound absorbing pipe | Naoyuki Furuta | 1990-02-13 |