Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5915676 | Lever-type frictional resistance force variable system | Hideaki Harada, Jun Hirai, Kenji Imada, Souhei Tateyama | 1999-06-29 |
| 5272847 | Long period pendulum damping equipment | Hideaki Harada, Kazumi Tamura, Manabu Fujishiro, Jun Hirai, Yasuo Ogi | 1993-12-28 |
| 5168967 | Dynamic damper and method for detecting malfunction of dynamic damper | Hideaki Harada, Kazumi Tamura, Manabu Fujishiro, Jun Hirai | 1992-12-08 |
| 4187614 | Tracer head | Yoshiaki Nakao, Yoshiaki Imamura, Hidetaka Sada | 1980-02-12 |