Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5487534 | Laminated rubber vibration control device for structures | Mitsuo Sakamoto, Norihide Koshika, Isao Nishimura, Katsuyasu Sasaki | 1996-01-30 |
| 5339580 | Laminated rubber building support and vibration damping device | Norihide Koshika, Mitsuo Sakamoto, Isao Nishimura, Katsuyasu Sasaki | 1994-08-23 |