Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5064890 | Noise insulating material | Nobuhiro Fujio, Takeshi Yamasaki, Isao Negishi, Toshio Nishizaki, Takashi Suzuki | 1991-11-12 |
| 4814018 | Filler for noise insulating material and noise insulating material using same | Nobuhiro Fujio, Takeshi Yamasaki, Toshio Nishizaki, Isao Negisi | 1989-03-21 |