Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5421129 | Vibration control device for structure | Mitsuo Sakamoto, Norihide Koshika, Isao Nishimura, Katsuyasu Sasaki | 1995-06-06 |
| 5410845 | Vibration control device for structure | Mitsuo Sakamoto, Norihide Koshika, Isao Nishimura, Katsuyasu Sasaki | 1995-05-02 |