Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5491938 | High damping structure | Naoki Niwa, Takuji Kobori, Narito Kurata, Takayuki Mizuno, Masatoshi Ishida +1 more | 1996-02-20 |
| 5347771 | High damping device for seismic response controlled structure | Takuji Kobori, Koji Ishii, Yoshinori Matsunaga, Naoki Niwa, Jun Tagami +2 more | 1994-09-20 |
| 5147018 | Cylinder lock device for use in structure | Takuji Kobori, Koji Ishii, Junichi Hirai, Yoshinori Adachi, Naoki Niwa +3 more | 1992-09-15 |
| 5065552 | Active seismic response control system for use in structure | Takuji Kobori, Tadashi Nasu, Naoki Niwa, Narito Kurata, Junichi Hirai +1 more | 1991-11-19 |
| 5036633 | Variable damping and stiffness structure | Takuji Kobori, Tadashi Nasu, Naoki Niwa, Narito Kurata, Junichi Hirai +2 more | 1991-08-06 |