Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4562997 | Shock absorber assembly for automotive vehicle suspension | Naoto Fukushima, Toji Takemura | 1986-01-07 |
| 4515252 | Piston stroke responsive vortex-flow shock absorber | Kunihiko Hidaka, Naoto Fukushima | 1985-05-07 |