Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5491938 | High damping structure | Naoki Niwa, Takuji Kobori, Motoichi Takahashi, Takayuki Mizuno, Masatoshi Ishida +1 more | 1996-02-20 |
| 5065552 | Active seismic response control system for use in structure | Takuji Kobori, Motoichi Takahashi, Tadashi Nasu, Naoki Niwa, Junichi Hirai +1 more | 1991-11-19 |
| 5036633 | Variable damping and stiffness structure | Takuji Kobori, Motoichi Takahashi, Tadashi Nasu, Naoki Niwa, Junichi Hirai +2 more | 1991-08-06 |