Issued Patents 2017
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9593750 | Chain guide and chain transmission device | Shinji Oishi | 2017-03-14 |
| 9587720 | Chain tensioner and chain transmission device | Shinji Oishi | 2017-03-07 |
| 9562593 | Chain guide and chain drive apparatus | Shinji Oishi, Takahiro Yamashita, Katsufumi Abe | 2017-02-07 |