Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5353559 | Anti-earthquake bearing apparatus | Nobuo Murota, Keizo Tatsunami, Koji Ishii, Atsuhiko Yasaka, Masao Iizuka | 1994-10-11 |
| 5347771 | High damping device for seismic response controlled structure | Takuji Kobori, Koji Ishii, Motoichi Takahashi, Yoshinori Matsunaga, Naoki Niwa +2 more | 1994-09-20 |
| 5193323 | Safety monitoring method for use in active seismic response and wind control system | Koji Ishii, Masao Iizuka, Toshikazu Yamada, Katsuyasu Sasaki, Yoshiki Ikeda | 1993-03-16 |
| 5177915 | Elasto-plastic damper | Takuju Kobori, Shunichi Yamada, Shigeru Ban, Koji Ishii, Isao Nishimura +4 more | 1993-01-12 |
| 5065555 | Elasto-plastic damper | Takuji Kobori, Shunichi Yamada, Shigeru Ban, Koji Ishii, Isao Nishimura +4 more | 1991-11-19 |
| 5046290 | Safety monitoring device for use in active seismic response and wind control system | Koji Ishit, Masao Iizuka, Toshikazu Yamada, Katsuyasu Sasaki, Yoshiki Ikeda | 1991-09-10 |
| 5025599 | Compound seismic response and wind control system | Koji Ishii, Kozo Toyama | 1991-06-25 |
| 5022201 | Apparatus for accelerating response time of active mass damper earthquake attenuator | Takuji Kobori, Mitsuo Sakamoto, Toshikazu Yamada, Isao Nishimura, Koji Ishii | 1991-06-11 |
| 4901486 | Elasto-plastic damper | Takuju Kobori, Shunichi Yamada, Shigeru Ban, Koji Ishii, Isao Nishimura +4 more | 1990-02-20 |