Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8936235 | Fluid-filled type vibration damping device and manufacturing method thereof | Hironori Koyama, Mutsumi Muraoka, Satoshi Umemura, Jyoji Tsutsumida, Shinichi Suganuma +2 more | 2015-01-20 |
| 8807546 | Fluid filled vibration damping device | Mutsumi Muraoka, Hironori Koyama | 2014-08-19 |