Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7258771 | Air/fuel ratio detection apparatus | Shigeo Isitani, Chiharu Katsuyama, Futoshi Ichiyanagi | 2007-08-21 |
| 7122103 | Air/fuel ratio detection apparatus | Shigeo Isitani, Futoshi Ichiyanagi, Chiharu Katsuyama | 2006-10-17 |