Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6227236 | Widely variable conductance valve | Ryoichi Oka | 2001-05-08 |
| 5413139 | Throttle valve | Ryoichi Oka | 1995-05-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6227236 | Widely variable conductance valve | Ryoichi Oka | 2001-05-08 |
| 5413139 | Throttle valve | Ryoichi Oka | 1995-05-09 |