Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6832474 | Exhaust gas purification device of internal combustion engine and method therefore | Shigemasa Hirooka | 2004-12-21 |
| 6742379 | Intake air oxygen concentration sensor calibration device and method | Takuji Matsubara | 2004-06-01 |
| 6739177 | Combustible-gas sensor, diagnostic device for intake-oxygen concentration sensor, and air-fuel ratio control device for internal combustion engines | Fumihiko Sato, Takuji Matsubara, Yoshihiko Hyoudo, Takayuki Takeuchi, Naohisa Oyama +1 more | 2004-05-25 |
| 6695895 | Fuel vapor handling apparatus and diagnostic apparatus thereof | Yoshihiko Hyodo, Takanobu Kawano, Hideaki Itakura, Masaki Takeyama, Naoya Kato | 2004-02-24 |