Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6041744 | Fan shroud integral with reserve tank of engine cooling apparatus | Yosihiko Oota | 2000-03-28 |
| 5312230 | Fan device capable of reducing the stagnant flow at the root area of fan blades | Shuji Komoda, Yoshihiko Sonoda | 1994-05-17 |