Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6390255 | Rotary damper | Hirozumi Sasa | 2002-05-21 |
| 6121526 | Rotary damper | Hirozumi Sasa | 2000-09-19 |
| 5875874 | Rotary damper with self-standing mechanism | Harunori Okabe, Kenji Takahashi, Hirozumi Sasa | 1999-03-02 |
| 5769188 | Rotary damper with self-standing mechanism | Harunori Okabe, Kenji Takahashi, Hirozumi Sasa | 1998-06-23 |
| 5152189 | High-torque damper | Osamu Miura, Susumu Takano | 1992-10-06 |