Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5875874 | Rotary damper with self-standing mechanism | Kenji Takahashi, Hirozumi Sasa, Takeaki Kobori | 1999-03-02 |
| 5769188 | Rotary damper with self-standing mechanism | Kenji Takahashi, Hirozumi Sasa, Takeaki Kobori | 1998-06-23 |
| 5697122 | Rotary damper and closure device with such rotary damper | Kenji Takahashi | 1997-12-16 |