Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8083217 | Fluid-filled type vibration damping device | Hironori Koyama, Koichi Hasegawa | 2011-12-27 |
| 8020677 | Vibration damping device and manufacturing method thereof | Koichi Hasegawa | 2011-09-20 |