Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10683912 | Planetary gear mechanism | Chigusa Ohishi, Keiji Sasaki | 2020-06-16 |
| 10423113 | Driving force transmission device and image forming apparatus | Chigusa Oishi, Keiji Sasaki | 2019-09-24 |